diff --git a/client/src_analyzer/Worker_Analyze.re b/client/src_analyzer/Worker_Analyze.re
index fc0cd57b..401f3709 100644
--- a/client/src_analyzer/Worker_Analyze.re
+++ b/client/src_analyzer/Worker_Analyze.re
@@ -225,10 +225,16 @@ module Make = (ESig: Worker_Evaluator.EvaluatorSig) => {
     };
 
   let executeMany:
-    (. Belt.Map.String.t(string)) => Belt.Map.String.t(list(blockData)) =
-    (. codeMap) => {
+    (. list((string, string))) => list((string, list(blockData))) =
+    (. codeBlocks) => {
       /* Reset before evaluating several blocks */
       Evaluator.reset();
-      codeMap->(Belt.Map.String.map(code => execute(. false, code)));
+      codeBlocks
+      ->(
+          Belt.List.mapU((. (id, code)) => {
+            Js.log(code);
+            (id, execute(. false, code));
+          })
+        );
     };
 };
diff --git a/client/src_editor/Editor_Blocks.re b/client/src_editor/Editor_Blocks.re
index f18e1b3a..9281e1c7 100644
--- a/client/src_editor/Editor_Blocks.re
+++ b/client/src_editor/Editor_Blocks.re
@@ -111,18 +111,17 @@ let make =
             ),
       })
     | Block_Execute =>
-      module MS = Belt.Map.String;
-
       let allCodeBlocks =
         state.blocks
         ->(
-            Belt.Array.reduceU(MS.empty, (. map, {b_id, b_data}) =>
+            Belt.Array.reduceU([], (. acc, {b_id, b_data}) =>
               switch (b_data) {
-              | B_Text(_) => map
-              | B_Code({bc_value}) => map->(MS.set(b_id, bc_value))
+              | B_Text(_) => acc
+              | B_Code({bc_value}) => [(b_id, bc_value), ...acc]
               }
             )
-          );
+          )
+        ->Belt.List.reverse;
 
       /* Clear all widgets and execute all blocks */
       ReasonReact.SideEffects(
@@ -133,7 +132,7 @@ let make =
               |> then_(results => {
                    results
                    ->(
-                       MS.forEachU((. blockId, result) => {
+                       Belt.List.forEachU((. (blockId, result)) => {
                          let widgets =
                            Editor_Blocks_Utils.executeResultToWidget(result);
                          self.send(Block_AddWidgets(blockId, widgets));
diff --git a/client/src_editor/Editor_Worker.re b/client/src_editor/Editor_Worker.re
index c5e4b9ed..2fec6520 100644
--- a/client/src_editor/Editor_Worker.re
+++ b/client/src_editor/Editor_Worker.re
@@ -16,8 +16,8 @@ type js_executeResult = {
 type rtop = {
   execute: (. bool, string) => Js.Promise.t(list(Worker_Types.blockData)),
   executeMany:
-    (. Belt.Map.String.t(string)) =>
-    Js.Promise.t(Belt.Map.String.t(list(Worker_Types.blockData))),
+    (. list((string, string))) =>
+    Js.Promise.t(list((string, list(Worker_Types.blockData)))),
 };
 let worker = RtopWorker.make();