I currently have a line of code referencing a form which prompts the user to enter a number; for example - QN =...

I currently have a line of code referencing a form which prompts the user to enter a number; for example - QN = forms.frm_QN_Print_Sheet.QN.  The program runs up to this point and ever prompts for input from the user.   My problem is that the module breaks at this point with an ambiguous "Object doesn't support this property or method".  What the heck am I missing here and why does it crash at this point?  How do I successfully code to get input from the user via a form?  The input is to be used by a query on a table to pick up other pertinent data and submit a print-out for the user.

Thanks for any help you can give.