Create Start->End process Select Sequence flow Switch to Expression mode in Condition Expression editor, select any language but Java Click on canvas and select Sequence flow again Actual Result: When you select any language but Java in Expression mode of the Condition Expression editor, Condition mode will be disabled – it is correct. But when you re-open this editor (by deactivation and re-activation of the Sequence Flow) it will be unlocked. Expected Result Condition view should be always unlocked for any language but Java user should see warning that expression can be parsed only for Java exclusively.