Following Userform has 4 (Four) Select All Check-boxes.
SelectAllE for Eastern Europe
SelectAllA for Middle East & Africa
SelectAllL for Latin America & Caribbean
SA for Select All Regions (Working)
only the fourth one is working correctly
Following are codes for each Checkboxes
Private Sub SA_Click() ' this one is working Correctly
Dim ctl As Control
Dim j As Long
For Each ctl In Me.Controls
If TypeOf ctl Is MSForms.CheckBox Then
If Me.Controls(ctl.Name).Value = True Then
Me.Bulgaria.Value = True
Me.Croatia.Value = True
Me.Croatia.Value = True
Me.czechrepublic.Value = True
Me.Estonia.Value = True
Me.Hungary.Value = True
Me.Latvia.Value = True
Me.Lithuania.Value = True
Me.Macedonia.Value = True
Me.Poland.Value = True
Me.Romania.Value = True
Me.Russia.Value = True
Me.Ukraine.Value = True
Me.Bahrain.Value = True
Me.CoteD.Value = True
Me.Egypt.Value = True
Me.Ghana.Value = True
Me.Iraq.Value = True
Me.Kenya.Value = True
Me.Kuwait.Value = True
Me.Morocco.Value = True
Me.Namibia.Value = True
Me.Nigeria.Value = True
Me.Oman.Value = True
Me.Palestine.Value = True
Me.Qatar.Value = True
Me.Rwanda.Value = True
Me.SaudiArabia.Value = True
Me.Turkey.Value = True
Me.Uganda.Value = True
Me.UAE.Value = True
Me.Zimbabwe.Value = True
Me.Chile.Value = True
Me.Mexico.Value = True
Me.Colombia.Value = True
Else
Me.Bulgaria.Value = False
Me.Croatia.Value = False
Me.Croatia.Value = False
Me.czechrepublic.Value = False
Me.Estonia.Value = False
Me.Hungary.Value = False
Me.Latvia.Value = False
Me.Lithuania.Value = False
Me.Macedonia.Value = False
Me.Poland.Value = False
Me.Romania.Value = False
Me.Russia.Value = False
Me.Ukraine.Value = False
Me.Bahrain.Value = False
Me.CoteD.Value = False
Me.Egypt.Value = False
Me.Ghana.Value = False
Me.Iraq.Value = False
Me.Kenya.Value = False
Me.Kuwait.Value = False
Me.Morocco.Value = False
Me.Namibia.Value = False
Me.Nigeria.Value = False
Me.Oman.Value = False
Me.Palestine.Value = False
Me.Qatar.Value = False
Me.Rwanda.Value = False
Me.SaudiArabia.Value = False
Me.Turkey.Value = False
Me.Uganda.Value = False
Me.UAE.Value = False
Me.Zimbabwe.Value = False
End If
End If
Next
End Sub
Private Sub SelectallE_Click() ' this one is not working Correctly
Dim ctl As Control
Dim j As Long
For Each ctl In Me.Controls
If TypeOf ctl Is MSForms.CheckBox Then
If Me.Controls(ctl.Name).Value = True Then
Me.Bulgaria.Value = True
Me.Croatia.Value = True
Me.Croatia.Value = True
Me.czechrepublic.Value = True
Me.Estonia.Value = True
Me.Hungary.Value = True
Me.Latvia.Value = True
Me.Lithuania.Value = True
Me.Macedonia.Value = True
Me.Poland.Value = True
Me.Romania.Value = True
Me.Russia.Value = True
Me.Ukraine.Value = True
Else
Me.Bulgaria.Value = False
Me.Croatia.Value = False
Me.Croatia.Value = False
Me.czechrepublic.Value = False
Me.Estonia.Value = False
Me.Hungary.Value = False
Me.Latvia.Value = False
Me.Lithuania.Value = False
Me.Macedonia.Value = False
Me.Poland.Value = False
Me.Romania.Value = False
Me.Russia.Value = False
Me.Ukraine.Value = False
Me.Chile.Value = False
Me.Mexico.Value = False
Me.Colombia.Value = False
End If
End If
Next
End Sub
Private Sub SelectAllA_Click() ' this one is not working Correctly
Dim ctl As Control
Dim j As Long
For Each ctl In Me.Controls
If TypeOf ctl Is MSForms.CheckBox Then
If Me.Controls(ctl.Name).Value = True Then
Me.Bahrain.Value = True
Me.CoteD.Value = True
Me.Egypt.Value = True
Me.Ghana.Value = True
Me.Iraq.Value = True
Me.Kenya.Value = True
Me.Kuwait.Value = True
Me.Morocco.Value = True
Me.Namibia.Value = True
Me.Nigeria.Value = True
Me.Oman.Value = True
Me.Palestine.Value = True
Me.Qatar.Value = True
Me.Rwanda.Value = True
Me.SaudiArabia.Value = True
Me.Turkey.Value = True
Me.Uganda.Value = True
Me.UAE.Value = True
Me.Zimbabwe.Value = True
Else
Me.Bahrain.Value = False
Me.CoteD.Value = False
Me.Egypt.Value = False
Me.Ghana.Value = False
Me.Iraq.Value = False
Me.Kenya.Value = False
Me.Kuwait.Value = False
Me.Morocco.Value = False
Me.Namibia.Value = False
Me.Nigeria.Value = False
Me.Oman.Value = False
Me.Palestine.Value = False
Me.Qatar.Value = False
Me.Rwanda.Value = False
Me.SaudiArabia.Value = False
Me.Turkey.Value = False
Me.Uganda.Value = False
Me.UAE.Value = False
Me.Zimbabwe.Value = False
End If
End If
Next
End Sub
Private Sub SelectAllL_Click() ' this one is not working Correctly
Dim ctl As Control
Dim j As Long
For Each ctl In Me.Controls
If TypeOf ctl Is MSForms.CheckBox Then
If Me.Controls(ctl.Name).Value = True Then
Me.Chile.Value = True
Me.Mexico.Value = True
Me.Colombia.Value = True
Else
Me.Chile.Value = False
Me.Mexico.Value = False
Me.Colombia.Value = False
End If
End If
Next
End Sub

Your code is too complicated, why not keeping it more simple? Since you are inside the Click event you know the control and don't need to loop each control of the userform!