>If this can be solved. I have a combobox and a textbox and only one can be active at once. If the textbox has any input in it, the combobox should be dis-enabled so in the interactive exchange have:
>if len(thisform.somectls1.mytextbox1.value)>0
>thisform.somectls1.mycombobox2.enabled=.f.
>else
>thisform.somectls1.mycombobox2.enabled=.t.
>endi
>SO I test it by enter a little text in the txtbox and the combo becomes disabled like it's supposed to but when I backspace and remove the text from the said txtbox the combobox never becomes enabled.

Use following:
if not empty(thisform.somectls1.mytextbox1.value)
etc.
Also, if it's the same textbox.interactivechange then use just
if not empty(this.value)
...