how to move only incorrect drag images?

In a drag and drop the correct answers are 1-1,2-2,3-3, ... You will need one action for each pair and a couple more and a spare variable.Actions1: Move Question variable to a temporary variable (Modify Variable: Target: temp; Value: var(Question_00xx)2. Clear question variable: Modify varaible: Target: Question_00xx; Value: (leave blank)3. Check for valid pairs: If temp contains 1-1, add 1-1, to Question_00xx Modify Variable; Target: Question_00xx; Value: 1-1, (include comma); Mod type: Add; Condition: temp contains 1-1 Modify Variable; Target: Question_00xx; Value: 2-2, (include comma); Mod type: Add; Condition: temp contains 2-2 Modify Variable; Target: Question_00xx; Value: 3, (include comma); Mod type: Add; Condition: temp contains 3-3

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