Changing string size on ProjInvoiceRevenue.Txt to support more information on Project Invoice

Hi everyone,

I need to change a ProjInvoiceRevenue.Txt to a Memo field to support more invoice text.  Currently the field is set up with EDT Freetext which has a string size of 255.  I have another EDT called FreeTxt which has string size Memo.

Can I change the EDT on the field to FreeTxt to make the field a memo field?  If I do that and compile, I get the follwing Warning:

Can I still do this?

Regards

Thor