how to move only incorrect drag images?

Uh, no - not exactly. This code resets the question which is reset when the page is refreshed. Lectora does not support that feature you are used to using. I am pretty sure I can come up with a workaround but not pretty. Essentially you have a monitor that checks the value of the question variable every .2 or .3 sec. If there is an incorrect answer there, it fixes it and refreshes the page. Call me 678-571-4179 for more info.

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