Variable/Path in VB script : VB script syntax pains me greatly compared to Powershell, but I have to use it for this. 

How to insert my Script Path Variable into powershell script path path. Also anyone know any Visual Studio Like tool I can write those? I think visual studio uses different .net vbs.

Here is the Code

    SCRIPT_PATH = Left(WScript.ScriptFullName, Len(WScript.ScriptFullName) - (Len(WScript.ScriptName)))
    msgbox SCRIPT_PATH
    Set objShell = CreateObject("WScript.Shell")
    objShell.Run "RUNAS  /user:Domain\User ""powershell SCRIPT_PATH & Delete_App_Script.ps1"""
    Set objShell = Nothing

How do I do SCRIPT_PATH = SCRIPT_PATH + Delete_App_Script.ps1 ?
It gives no errors, so I am not sure what is the problem.
Am I missing some "" or some ,, ? 
I seen some .Run ,,, syntax for Admin running and This one. Doesn't explain what goes into "".
Not looking forward creating interface for this.

Thank for your help