Determines whether an authenticated user belongs to the
        specified Role.
			
		
		
		
		Function ISUSERINROLE
Example
isuserinrole(any role_name):boolean
Arguments
				The arguments for this function are set. You can not use other arguments except the following ones.
				
			
		
		
			| Name | Type | Required | Description | 
|---|---|---|---|
| role_name | any | Yes | Name of a security role | 
