How to remove quotes from variable

How do I remove the '' from the UserID variable so that I can return the below statement:

@UserID varchar(max)='13,28'

SELECT UserID FROM Users WHERE CAST(UserID AS varchar(20)) IN (@UserID)

@UserID = '13,28' does not work but @UserID = 13,28 does.
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Ess KayEntrapenuerCommented:
use the replace command
Ess KayEntrapenuerCommented:
@UserID varchar(max)= REPLACE(@strip, '13,28', '')
Brian CroweDatabase AdministratorCommented:
You would have to use dynamic sql:


/* Build and Execute a Transact-SQL String with a single
parameter value Using sp_executesql Command */
SET @EmpID = '1001,1003'
SET @SQLQuery = 'SELECT * FROM tblEmployees
WHERE EmployeeID IN(' + @EmpID + ')'
EXECUTE sp_executesql @SQLQuery

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barnescoAuthor Commented:
Thanks, that worked great.
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Microsoft SQL Server

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