What is wrong here?

[PantZ4]

For $x = 0 To $Numberofgroups Step 1
        $Controlgroupheigth[$x] = (($Controlgroupcontainsmax[$x]-$Controlgroupcontainsmin[$x])*25)+30
    NextoÝ÷ ÙV«¦åzÀÞrV«yÖµêè­×«jëh×6Local $Numberofgroups = 7
Dim $Controlgroupcontainsmax[$Numberofgroups], $Controlgroupcontainsmin[$Numberofgroups], $Controlgroupheigth[$Numberofgroups]

The error:

Array variable has incorrect number of subscripts or subscript dimension range exceeded.:
$Controlgroupheigth[$x] = (($Controlgroupcontainsmax[$x]-$Controlgroupcontainsmin[$x])*25)+30 
$Controlgroupheigth[$x] = ((^ ERROR

Can't see what I "exceeded"...

Thank you

[SmOke_N]

Dim $Controlgroupcontainsmax[$Numberofgroups +1], $Controlgroupcontainsmin[$Numberofgroups +1], $Controlgroupheigth[$Numberofgroups +1]

[PantZ4]

Dim $Controlgroupcontainsmax[$Numberofgroups +1], $Controlgroupcontainsmin[$Numberofgroups +1], $Controlgroupheigth[$Numberofgroups +1]

So simple yet so stupid

Thank you SmOke_N!