Hey there, ive a problem with an input field. If the user write something in the Input1 Field, the second one should be disabled. The following code works fine but only if the user change the focus of the inputfield. So is there any way how i could check if someone write into the field? #include <GUIConstants.au3> #Region ### START Koda GUI section ### Form= $Form1 = GUICreate("Form1", 371, 161, 242, 218) $Input1 = GUICtrlCreateInput("", 40, 48, 273, 21) $Input2 = GUICtrlCreateIn