Pass SQl Query parameter for Powershell Script

Hi,
I have following parameters being passed from SQL Stored procedure to Powershell.
----------PowerShell Start
 param
(
      [string] $server = "SQL2",
     [string] $database  = ("Utils"),
    [string] $query = "Select * from xPM_Extract",
    [string] $extractFile = "C:\temp\csv2  export.csv"
)
 
Write-Host $server
Write-Host $database
Write-Host $query
Write-Host $extractFile
----------PowerShell END
 
Problem is that parameters for $query & $extractFile are cutoff at first encounter of space. I call my SP as
Exec usp_MYPS_Export2CSV 'Utils','Select * From Customers','C:\temp\csv2 out.csv'
Translates to
EXEC xp_cmdshell 'PowerShell -Command "C:\Util\PSScripts\SQL_Export2CSV2.ps1 -Server SQL3 -database Test -query Select * From Customers -extractFile "C:\temp\csv2  out.csv"'
Output from Powersehll is Shown below after executing above statement from SSMS.
SQL3
Test
Select
C:\temp\csv2
------------output Ends here
 
I want to see output as below.
SQL3
Test

Select * from xPM_Extract

C:\temp\csv2  export.csv
----------------------
 Please notice that Query is trimmed at Select and Output file name is trimmed at csv2.
 How to pass parameters with space in them?
 

 

Thanks.