>>If you do not get an error message, it probably indicates that you have default code somewhere that pur enabled back. Check whether your code This.Button.ENABLED = .F. works. Just add [wait wind time 2.0] after it to see whether button is disabled andthen enabled back.
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>Error says "Unknown member BUTTON"

You need to use the name of the button -- the actual name found in the NAME property of the object.