If I want to call form1 by pressing a command button on form2, do the two forms have to exist in the same project? I have tried the following:

Private Sub CmdCalcu_Click()
Call frmCalculator.Form_Load
End Sub

to call the frmCalculator.frm from frmNumbers.frm, by pressing cmdCalcu.cmd,

but every time the application is launched, i receive the error message:
Tun time error - Object required.

Please give me a suggestion of what could be wrong. I'm pretty new in this area...
Thank you