diff --git a/drools-workbench-models/drools-workbench-models-commons/src/main/java/org/drools/workbench/models/commons/backend/rule/ActionCallMethodBuilder.java b/drools-workbench-models/drools-workbench-models-commons/src/main/java/org/drools/workbench/models/commons/backend/rule/ActionCallMethodBuilder.java
index 83806a5b7ea..8e7148c5474 100644
--- a/drools-workbench-models/drools-workbench-models-commons/src/main/java/org/drools/workbench/models/commons/backend/rule/ActionCallMethodBuilder.java
+++ b/drools-workbench-models/drools-workbench-models-commons/src/main/java/org/drools/workbench/models/commons/backend/rule/ActionCallMethodBuilder.java
@@ -43,6 +43,41 @@ public ActionCallMethodBuilder( RuleModel model,
         this.boundParams = boundParams;
     }
 
+    //ActionCallMethods do not support chained method invocations
+    public boolean supports( final String line ) {
+        final List<String> splits = new ArrayList<String>();
+        int depth = 0;
+        int textDepth = 0;
+        boolean escape = false;
+        StringBuffer split = new StringBuffer();
+        for ( char c : line.toCharArray() ) {
+            if ( depth == 0 && c == '.' ) {
+                splits.add( split.toString() );
+                split = new StringBuffer();
+                depth = 0;
+                textDepth = 0;
+                escape = false;
+                continue;
+            } else if ( c == '\\' ) {
+                escape = true;
+                split.append( c );
+                continue;
+            } else if ( textDepth == 0 && c == '"' ) {
+                textDepth++;
+            } else if ( !escape && textDepth > 0 && c == '"' ) {
+                textDepth--;
+            } else if ( textDepth == 0 && c == '(' ) {
+                depth++;
+            } else if ( textDepth == 0 && c == ')' ) {
+                depth--;
+            }
+            split.append( c );
+            escape = false;
+        }
+        splits.add( split.toString() );
+        return splits.size() == 2;
+    }
+
     public ActionCallMethod get( String variable,
                                  String methodName,
                                  String[] parameters ) {
diff --git a/drools-workbench-models/drools-workbench-models-commons/src/main/java/org/drools/workbench/models/commons/backend/rule/RuleModelDRLPersistenceImpl.java b/drools-workbench-models/drools-workbench-models-commons/src/main/java/org/drools/workbench/models/commons/backend/rule/RuleModelDRLPersistenceImpl.java
index 996475aa8b0..daef873c7fd 100644
--- a/drools-workbench-models/drools-workbench-models-commons/src/main/java/org/drools/workbench/models/commons/backend/rule/RuleModelDRLPersistenceImpl.java
+++ b/drools-workbench-models/drools-workbench-models-commons/src/main/java/org/drools/workbench/models/commons/backend/rule/RuleModelDRLPersistenceImpl.java
@@ -2921,20 +2921,25 @@ private void parseRhs( final RuleModel m,
         }
     }
 
-    private ActionCallMethod getActionCallMethod( final RuleModel model,
-                                                  final boolean isJavaDialect,
-                                                  final Map<String, String> boundParams,
-                                                  final PackageDataModelOracle dmo,
-                                                  final String line,
-                                                  final String variable,
-                                                  final String methodName ) {
-
-        return new ActionCallMethodBuilder( model,
-                                            dmo,
-                                            isJavaDialect,
-                                            boundParams ).get( variable,
-                                                               methodName,
-                                                               unwrapParenthesis( line ).split( "," ) );
+    private IAction getActionCallMethod( final RuleModel model,
+                                         final boolean isJavaDialect,
+                                         final Map<String, String> boundParams,
+                                         final PackageDataModelOracle dmo,
+                                         final String line,
+                                         final String variable,
+                                         final String methodName ) {
+        final ActionCallMethodBuilder builder = new ActionCallMethodBuilder( model,
+                                                                             dmo,
+                                                                             isJavaDialect,
+                                                                             boundParams );
+        if ( !builder.supports( line ) ) {
+            final FreeFormLine ffl = new FreeFormLine();
+            ffl.setText( line );
+            return ffl;
+        }
+        return builder.get( variable,
+                            methodName,
+                            unwrapParenthesis( line ).split( "," ) );
     }
 
     private boolean isInsertedFact( final String[] lines,
diff --git a/drools-workbench-models/drools-workbench-models-commons/src/test/java/org/drools/workbench/models/commons/backend/rule/RuleModelDRLPersistenceUnmarshallingTest.java b/drools-workbench-models/drools-workbench-models-commons/src/test/java/org/drools/workbench/models/commons/backend/rule/RuleModelDRLPersistenceUnmarshallingTest.java
index b3a72b36bc4..2ef6e0bf5e2 100644
--- a/drools-workbench-models/drools-workbench-models-commons/src/test/java/org/drools/workbench/models/commons/backend/rule/RuleModelDRLPersistenceUnmarshallingTest.java
+++ b/drools-workbench-models/drools-workbench-models-commons/src/test/java/org/drools/workbench/models/commons/backend/rule/RuleModelDRLPersistenceUnmarshallingTest.java
@@ -7314,6 +7314,254 @@ public void testLHSFormula() throws Exception {
                                       RuleModelDRLPersistenceImpl.getInstance().marshal( m ) );
     }
 
+    @Test
+    //https://bugzilla.redhat.com/show_bug.cgi?id=1127303
+    public void testRHSChainedMethodCalls1() throws Exception {
+        String drl = "package org.test;\n" +
+                "rule \"MyRule\"\n" +
+                "dialect \"mvel\"\n" +
+                "when\n" +
+                "  Person( $n : name )\n" +
+                "then\n" +
+                "  $n.toUpperCase().indexOf(\"S\", 1);\n" +
+                "end";
+
+        addModelField( "org.test.Person",
+                       "this",
+                       "org.test.Person",
+                       DataType.TYPE_THIS );
+        addModelField( "org.test.Person",
+                       "name",
+                       String.class.getName(),
+                       DataType.TYPE_STRING );
+
+        when( dmo.getPackageName() ).thenReturn( "org.test" );
+
+        final RuleModel m = RuleModelDRLPersistenceImpl.getInstance().unmarshal( drl,
+                                                                                 new ArrayList<String>(),
+                                                                                 dmo );
+
+        assertNotNull( m );
+
+        assertEquals( 1,
+                      m.lhs.length );
+        final IPattern p0 = m.lhs[ 0 ];
+        assertTrue( p0 instanceof FactPattern );
+        final FactPattern fp0 = (FactPattern) p0;
+        assertEquals( "Person",
+                      fp0.getFactType() );
+
+        assertEquals( 1,
+                      fp0.getNumberOfConstraints() );
+        assertTrue( fp0.getConstraint( 0 ) instanceof SingleFieldConstraint );
+
+        final SingleFieldConstraint sfc1 = (SingleFieldConstraint) fp0.getConstraint( 0 );
+        assertEquals( "Person",
+                      sfc1.getFactType() );
+        assertEquals( "name",
+                      sfc1.getFieldName() );
+        assertEquals( DataType.TYPE_STRING,
+                      sfc1.getFieldType() );
+
+        assertEquals( 1,
+                      m.rhs.length );
+        final IAction a0 = m.rhs[ 0 ];
+        assertTrue( a0 instanceof FreeFormLine );
+        final FreeFormLine ffl1 = (FreeFormLine) a0;
+        assertEquals( "$n.toUpperCase().indexOf(\"S\", 1);",
+                      ffl1.getText() );
+
+        //Check round-trip
+        assertEqualsIgnoreWhitespace( drl,
+                                      RuleModelDRLPersistenceImpl.getInstance().marshal( m ) );
+    }
+
+    @Test
+    //https://bugzilla.redhat.com/show_bug.cgi?id=1127303
+    public void testRHSChainedMethodCalls2() throws Exception {
+        String drl = "package org.test;\n" +
+                "rule \"MyRule\"\n" +
+                "dialect \"mvel\"\n" +
+                "when\n" +
+                "  Person( $n : name )\n" +
+                "then\n" +
+                "  $n.toUpperCase().indexOf(\".\", 1);\n" +
+                "end";
+
+        addModelField( "org.test.Person",
+                       "this",
+                       "org.test.Person",
+                       DataType.TYPE_THIS );
+        addModelField( "org.test.Person",
+                       "name",
+                       String.class.getName(),
+                       DataType.TYPE_STRING );
+
+        when( dmo.getPackageName() ).thenReturn( "org.test" );
+
+        final RuleModel m = RuleModelDRLPersistenceImpl.getInstance().unmarshal( drl,
+                                                                                 new ArrayList<String>(),
+                                                                                 dmo );
+
+        assertNotNull( m );
+
+        assertEquals( 1,
+                      m.lhs.length );
+        final IPattern p0 = m.lhs[ 0 ];
+        assertTrue( p0 instanceof FactPattern );
+        final FactPattern fp0 = (FactPattern) p0;
+        assertEquals( "Person",
+                      fp0.getFactType() );
+
+        assertEquals( 1,
+                      fp0.getNumberOfConstraints() );
+        assertTrue( fp0.getConstraint( 0 ) instanceof SingleFieldConstraint );
+
+        final SingleFieldConstraint sfc1 = (SingleFieldConstraint) fp0.getConstraint( 0 );
+        assertEquals( "Person",
+                      sfc1.getFactType() );
+        assertEquals( "name",
+                      sfc1.getFieldName() );
+        assertEquals( DataType.TYPE_STRING,
+                      sfc1.getFieldType() );
+
+        assertEquals( 1,
+                      m.rhs.length );
+        final IAction a0 = m.rhs[ 0 ];
+        assertTrue( a0 instanceof FreeFormLine );
+        final FreeFormLine ffl1 = (FreeFormLine) a0;
+        assertEquals( "$n.toUpperCase().indexOf(\".\", 1);",
+                      ffl1.getText() );
+
+        //Check round-trip
+        assertEqualsIgnoreWhitespace( drl,
+                                      RuleModelDRLPersistenceImpl.getInstance().marshal( m ) );
+    }
+
+    @Test
+    //https://bugzilla.redhat.com/show_bug.cgi?id=1127303
+    public void testRHSChainedMethodCalls3() throws Exception {
+        String drl = "package org.test;\n" +
+                "rule \"MyRule\"\n" +
+                "dialect \"mvel\"\n" +
+                "when\n" +
+                "  Person( $n : name )\n" +
+                "then\n" +
+                "  $n.toUpperCase().indexOf(\"(\", 1);\n" +
+                "end";
+
+        addModelField( "org.test.Person",
+                       "this",
+                       "org.test.Person",
+                       DataType.TYPE_THIS );
+        addModelField( "org.test.Person",
+                       "name",
+                       String.class.getName(),
+                       DataType.TYPE_STRING );
+
+        when( dmo.getPackageName() ).thenReturn( "org.test" );
+
+        final RuleModel m = RuleModelDRLPersistenceImpl.getInstance().unmarshal( drl,
+                                                                                 new ArrayList<String>(),
+                                                                                 dmo );
+
+        assertNotNull( m );
+
+        assertEquals( 1,
+                      m.lhs.length );
+        final IPattern p0 = m.lhs[ 0 ];
+        assertTrue( p0 instanceof FactPattern );
+        final FactPattern fp0 = (FactPattern) p0;
+        assertEquals( "Person",
+                      fp0.getFactType() );
+
+        assertEquals( 1,
+                      fp0.getNumberOfConstraints() );
+        assertTrue( fp0.getConstraint( 0 ) instanceof SingleFieldConstraint );
+
+        final SingleFieldConstraint sfc1 = (SingleFieldConstraint) fp0.getConstraint( 0 );
+        assertEquals( "Person",
+                      sfc1.getFactType() );
+        assertEquals( "name",
+                      sfc1.getFieldName() );
+        assertEquals( DataType.TYPE_STRING,
+                      sfc1.getFieldType() );
+
+        assertEquals( 1,
+                      m.rhs.length );
+        final IAction a0 = m.rhs[ 0 ];
+        assertTrue( a0 instanceof FreeFormLine );
+        final FreeFormLine ffl1 = (FreeFormLine) a0;
+        assertEquals( "$n.toUpperCase().indexOf(\"(\", 1);",
+                      ffl1.getText() );
+
+        //Check round-trip
+        assertEqualsIgnoreWhitespace( drl,
+                                      RuleModelDRLPersistenceImpl.getInstance().marshal( m ) );
+    }
+
+    @Test
+    //https://bugzilla.redhat.com/show_bug.cgi?id=1127303
+    public void testRHSChainedMethodCalls4() throws Exception {
+        String drl = "package org.test;\n" +
+                "rule \"MyRule\"\n" +
+                "dialect \"mvel\"\n" +
+                "when\n" +
+                "  Person( $n : name )\n" +
+                "then\n" +
+                "  $n.toUpperCase().indexOf(\"\\\").\", 1);\n" +
+                "end";
+
+        addModelField( "org.test.Person",
+                       "this",
+                       "org.test.Person",
+                       DataType.TYPE_THIS );
+        addModelField( "org.test.Person",
+                       "name",
+                       String.class.getName(),
+                       DataType.TYPE_STRING );
+
+        when( dmo.getPackageName() ).thenReturn( "org.test" );
+
+        final RuleModel m = RuleModelDRLPersistenceImpl.getInstance().unmarshal( drl,
+                                                                                 new ArrayList<String>(),
+                                                                                 dmo );
+
+        assertNotNull( m );
+
+        assertEquals( 1,
+                      m.lhs.length );
+        final IPattern p0 = m.lhs[ 0 ];
+        assertTrue( p0 instanceof FactPattern );
+        final FactPattern fp0 = (FactPattern) p0;
+        assertEquals( "Person",
+                      fp0.getFactType() );
+
+        assertEquals( 1,
+                      fp0.getNumberOfConstraints() );
+        assertTrue( fp0.getConstraint( 0 ) instanceof SingleFieldConstraint );
+
+        final SingleFieldConstraint sfc1 = (SingleFieldConstraint) fp0.getConstraint( 0 );
+        assertEquals( "Person",
+                      sfc1.getFactType() );
+        assertEquals( "name",
+                      sfc1.getFieldName() );
+        assertEquals( DataType.TYPE_STRING,
+                      sfc1.getFieldType() );
+
+        assertEquals( 1,
+                      m.rhs.length );
+        final IAction a0 = m.rhs[ 0 ];
+        assertTrue( a0 instanceof FreeFormLine );
+        final FreeFormLine ffl1 = (FreeFormLine) a0;
+        assertEquals( "$n.toUpperCase().indexOf(\"\\\").\", 1);",
+                      ffl1.getText() );
+
+        //Check round-trip
+        assertEqualsIgnoreWhitespace( drl,
+                                      RuleModelDRLPersistenceImpl.getInstance().marshal( m ) );
+    }
+
     private void assertEqualsIgnoreWhitespace( final String expected,
                                                final String actual ) {
         final String cleanExpected = expected.replaceAll( "\\s+",