Thanks for the question. Could you please confirm the full control name you are using? (In the form designer, select the appropriate tab on the component pallete and hold the mouse over the component to see it’s name).
It sounds like an exception is being raised when you try to access the property, but it is being suppressed by an ‘on error resume next’ or similar call. Try turning off any exception handling you may have implemented to see if an error message appears – it’s details may be a clue.
Once you confirm the name of the component I’ll check its properties to confirm your usage is correct.