Trying to combine 2 lines

On a script i have this scenario which im trying to solve

If IsArray($CleanUpData) Then
Select
Case IsArray($CleanUpData)
$aRarFile = _RecFileListToArray(@ScriptDir, "*.rar|*.part*", 1, 0) ;<<<<<<<<<<< this one
_ArrayDisplay($aRarFile, ".Rar Files")
Case IsArray($CleanUpData)
$aRarFile = _RecFileListToArray(@ScriptDir, "*.part1.rar;*.part01.rar;*.part001.rar;*.7z;*.001", 1, 0) ;<<<<<<<<<<< and this one
_ArrayDisplay($aRarFile, ".Rar Files")
Case Else
$aZipFile = _RecFileListToArray(@ScriptDir, "*.zip", 1, 0) ; Search for .zip files
_ArrayDisplay($aZipFile, ".Zip Files")
EndSelect

The problem is i have no case arguments that i can use other then IsArray($CleanUpData)

and the case else must be the zip

How can i combine the 2 marked lines without causing the conflict of single rar ignoring the part and also to find the part.rar when needed?

Or a way to make it do both searches and only keep the right one?

Basically it only looks for the first file only

If this makes no sense i will try and explain again