Dredded "Enter parameter"

[NeatAverage]

Hello, I have been reading through these forums most of the morning, but cannot seem to find a solution to the dreaded "Enter parameter" problem. I think the problem is in the Control Source- but I am not sure how to fix it.

I open a form "Risk Overview" through a combo box "Combo28" which is populated by a table. The code for the button is:

DoCmd.OpenForm "Risk Overview", , , "Title_Name = '" & Me.Combo28.Column(1) & "'"

I know that many people have this problem- I appreciate any help in advance in figuring it out.

Thanks!