Passing A Parameter To A USE Command Within A Cursor

Hi everyone I am trying to pass a parameter to a USE command within the body of a cursor. I keep getting an error. Here is my code.




Code Snippet
DECLARE @SQLText AS NVARCHAR(4000)
Declare @SQLText2 as NVARCHAR (2000)


DECLARE Cursor_Trial CURSOR FOR SELECT name FROM sys.sysdatabases order by name
Declare @name as varchar(255)
Open Cursor_Trial
FETCH NEXT FROM Cursor_Trial INTO @name
WHILE @@FETCH_STATUS = 0
BEGIN
Use @name --------This is where I'm getting the error


Set @SQLText2 = @name
select @SQLText2, * from sys.database_principals
where type_desc='DATABASE_ROLE'
and name = 'xxxxx'

FETCH NEXT FROM Cursor_Trial INTO @name

END

CLOSE Cursor_Trial
DEALLOCATE Cursor_Trial


As you can see I am trying to pass the next database name into the body of the cursor so that the query will pull the role information only for the current database in the loop. Any thoughts or tips? Is there a better way to accomplish what I'm trying to do here?