Call two subforms on a Main Form with one buton

Hi I have tried your solution but I cannot get to work I keep getting

Compile Error:

Argument not optional

I have attached my final code.  The only other thing that might be causing a problem is that I have more than one button which calls a subform to [SFsubform] and [SFsubform1] which works well when one button opens one subform but not when I try to cahnge code as suggested.

I

Many thanks again in advance for your help.

Option Compare Database
Option Explicit
 
'MainForm and SubForm Visability Control ************
'
Sub closesf(sForm As String, sForm5 As String)
Me.sfsubform.SourceObject = sForm
Me.sfsubform1.SourceObject = sForm5
End Sub
 
''******Open MainFormSubform Start Screen********
'This opens Subform [CMSMainformMain] on subform sfsubform
Private Sub Command123_Click()
Call closesf("CMSMainSubFormMain", "CMSReportsModule")
End Sub
 
'******Open Mainform SubForm Option1********
'This opens Subform [CMSMainformSub1] on subform sfsubform1
Private Sub Command104_Click()
Call closesf("CMSMainSubForm1")
End Sub
 
'******Open Mainform SubForm Option1********
'This opens the Find Project Form on subform sfsubform1
Private Sub Command59_Click()
Call closesf("FindProjectForm")
End Sub
 
'******Open Mainform SubForm Option2********
'This opens Subform [CMSMainformSub2] on subform sfsubform1
Private Sub Command105_Click()
Call closesf("CMSMainSubForm2")
End Sub
 
'******Open Mainform SubForm Option3********
'This opens Subform [CMSMainformSub3] on subform sfsubform1
Private Sub Command106_Click()
Call closesf("CMSMainSubForm3")
End Sub
 
'******Open Mainform SubForm Option4********
'This opens Subform [CMSMainformSub4] on subform sfsubform1
Private Sub Command107_Click()
Call closesf("CMSMainSubForm4")
End Sub
 
'******Open Mainform SubForm Option5********
'This opens Subform [CMSMainformSub5] on subform sfsubform1
Private Sub Command108_Click()
Call closesf("CMSMainSubForm5")
End Sub

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Final code for other users to understand how problem was solved !

'*****************************************************************************************************************
'New Mainform Subform window switching code 5th July 2009
'*****************************************************************************************************************
Sub closesf10(sform As String, sformcontrol As String)
Me.Controls(sformcontrol).SourceObject = sform
End Sub
Private Sub Command166_Click()
Call closesf10("CMSMainSubFormMain", "sfsubform")
Call closesf10("CMSReportsModule", "sfsubform1")
End Sub
'This opens Subform [CMSMainformSub1] on subform sfsubform and Reports Module on sfsubform1
Private Sub Command104_Click()
Call closesf10("CMSMainSubForm1", "sfsubform")
Call closesf10("CMSReportsModule", "sfsubform1")
End Sub
'This opens Subform [CMSMainformSub2] on subform sfsubform and Reports Module on sfsubform1
Private Sub Command105_Click()
Call closesf10("CMSMainSubForm2", "sfsubform")
Call closesf10("CMSReportsModule", "sfsubform1")
End Sub
'This opens Subform [CMSMainformSub3] on subform sfsubform and Reports Module on sfsubform1
Private Sub Command106_Click()
Call closesf10("CMSMainSubForm3", "sfsubform")
Call closesf10("CMSReportsModule", "sfsubform1")
End Sub
'This opens Subform [CMSMainformSub4] on subform sfsubform and Reports Module on sfsubform1
Private Sub Command107_Click()
Call closesf10("CMSMainSubForm4", "sfsubform")
Call closesf10("CMSReportsModule", "sfsubform1")
End Sub
'This opens Subform [CMSMainformSub5] on subform sfsubform1 and Reports Module on sfsubform1
Private Sub Command108_Click()
Call closesf10("CMSMainSubForm6", "sfsubform")
Call closesf10("CMSReportsModule", "sfsubform1")
End Sub
'This opens Subform [CMSMainformMain] on subform sfsubform
Private Sub Command123_Click()
Call closesf10("CMSMainSubFormMain", "sfsubform")
Call closesf10("CMSReportsModule", "sfsubform1")
End Sub

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