diff --git a/activities/responsesReferenceActivity/responsesReferenceActivity_schema b/activities/responsesReferenceActivity/responsesReferenceActivity_schema
index afd4631..97d341c 100644
--- a/activities/responsesReferenceActivity/responsesReferenceActivity_schema
+++ b/activities/responsesReferenceActivity/responsesReferenceActivity_schema
@@ -1,7 +1,7 @@
 {
     "@context": "https://raw.githubusercontent.com/ReproNim/reproschema/1.0.0/contexts/reproschema",
     "@type": "reproschema:Activity",
-    "@id": "responseReferenceActivity_schema",
+    "@id": "responsesReferenceActivity_schema",
     "prefLabel": "Global Responses Reference Activity",
     "description": "Demonstrates conditional visibility by referring to the global responses variable that stores all responses.",
     "preamble": "Demonstrates conditional visibility by referring to the global responses variable that stores all responses. After answering the first question, the second question will be determined by referring to your first answer in the global responses object.",
diff --git a/activities/selectActivity/items/slider_item_with_max b/activities/selectActivity/items/slider_item_with_max
new file mode 100644
index 0000000..82e706b
--- /dev/null
+++ b/activities/selectActivity/items/slider_item_with_max
@@ -0,0 +1,41 @@
+{
+    "@context": "https://raw.githubusercontent.com/ReproNim/reproschema/1.0.0/contexts/reproschema",
+    "@type": "reproschema:Field",
+    "@id": "slider_item_with_max",
+    "prefLabel": "slider item with max value",
+    "description": "This is a slider item with max value.",
+    "schemaVersion": "1.0.0",
+    "version": "0.0.1",
+    "question": "This is an example of a slider item with max value.",
+    "ui": {
+        "inputType": "slider"
+    },
+    "responseOptions": {
+        "valueType": "xsd:integer",
+        "minValue": 0,
+        "maxValue": 100,
+        "multipleChoice": false,
+        "choices": [
+            {
+                "name": "Response option 1",
+                "value": 0
+            },
+            {
+                "name": "Response option 2",
+                "value": 25
+            },
+            {
+                "name": "Response option 3",
+                "value": 50
+            },
+            {
+                "name": "Response option 4",
+                "value": 75
+            },
+            {
+                "name": "Response option 5",
+                "value": 100
+            }
+        ]
+    }
+}
\ No newline at end of file
diff --git a/activities/selectActivity/items/slider_item b/activities/selectActivity/items/slider_item_without_max
similarity index 78%
rename from activities/selectActivity/items/slider_item
rename to activities/selectActivity/items/slider_item_without_max
index 1be5698..5b2112a 100644
--- a/activities/selectActivity/items/slider_item
+++ b/activities/selectActivity/items/slider_item_without_max
@@ -1,19 +1,17 @@
 {
     "@context": "https://raw.githubusercontent.com/ReproNim/reproschema/1.0.0/contexts/reproschema",
     "@type": "reproschema:Field",
-    "@id": "slider_item",
-    "prefLabel": "slider item",
-    "description": "This is a slider item.",
+    "@id": "slider_item_without_max",
+    "prefLabel": "slider item without max",
+    "description": "This is a slider item without max value.",
     "schemaVersion": "1.0.0",
     "version": "0.0.1",
-    "question": "This is an example of a slider item.",
+    "question": "This is an example of a slider item without max value.",
     "ui": {
         "inputType": "slider"
     },
     "responseOptions": {
         "valueType": "xsd:integer",
-        "minValue": 0,
-        "maxValue": 4,
         "multipleChoice": false,
         "choices": [
             {
@@ -31,13 +29,11 @@
             {
                 "name": "Response option 4",
                 "value": 3
-            }
-            ,
+            },
             {
                 "name": "Response option 5",
                 "value": 4
             }
-
         ]
     }
 }
\ No newline at end of file
diff --git a/activities/selectActivity/selectActivity_schema b/activities/selectActivity/selectActivity_schema
index 4702915..03e75c1 100644
--- a/activities/selectActivity/selectActivity_schema
+++ b/activities/selectActivity/selectActivity_schema
@@ -37,8 +37,15 @@
                     "reproschema:Skipped"
                 ]
                 },
-                {"isAbout": "items/slider_item",
-                "variableName": "slider_item",
+                {"isAbout": "items/slider_item_with_max",
+                "variableName": "slider_item_with_max",
+                "isVis": true,
+                  "allow": [
+                    "reproschema:Skipped"
+                ]
+                },
+                {"isAbout": "items/slider_item_without_max",
+                "variableName": "slider_item_without_max",
                 "isVis": true,
                   "allow": [
                     "reproschema:Skipped"
@@ -50,7 +57,8 @@
             "items/radio_item_multiple_choice",
             "items/select_item",
             "items/select_item_multiple_choice",
-            "items/slider_item"
+            "items/slider_item_with_max",
+            "items/slider_item_without_max"
         ],
         "shuffle": false,
         "allow": [