Conditonally format text box on main form based on sub form check box

[LD1010]

Is it possible to conditionally format a text box on the main (single)form based on the value of a check box on a sub form? If so how would you construct the format statement?

I've tried the following:

IIf([Forms]![sfrmSurveySent].[SurveySent]= Yes,True,False)

 

[MajP]

Yes. Simply.
Select: "Expression Is"
[sfrmSurveySent]![SurveySent]

 

[LD1010]

Thanks MajP,

I've tried what you posted but it doesn't seem to work? I must me missing something.