fix: Fixing non implemented triggerMessage support

Author: moufmouf

src/Features/variable_actions.ts

@@ -34,8 +34,13 @@ function setupVariableActionLayer(
     if (enterValue !== undefined) {
         WA.room.onEnterLayer(layerName).subscribe(() => {
             if (triggerMessage) {
-                // TODO WHEN WA.ui.displayMessage is merged!
-                //WA.ui.
+                WA.ui.displayActionMessage({
+                    type: "message",
+                    message: triggerMessage,
+                    callback: () => {
+                        WA.state[variableName] = enterValue;
+                    },
+                });
             } else {
                 WA.state[variableName] = enterValue;
             }