Double.TryParse - Uipath Academy

Hello everyone!

I am doing the first exercise from Level 3 and at the last part, I have a trouble.
I do not know what is the type for the variables CashIn, OnUsCheck, NotOnUsCheck and dbl_Cash, dbl_OnUsCheck, dbl_NotOnUsCheck.
I tried with Object (CashIn, OnUsCheck, NotOnUsCheck) and Int32(dbl_Cash, dbl_OnUsCheck, dbl_NotOnUsCheck), but the condition had a error.