Stored Procedure Returns Unnecessary Conversion Error

The Query:


Code:

AS
DECLARE@UPLIDCount int
DECLARE @OldUPLIDCount int
SELECT @UPLIDCount = (SELECT Count(UPLID)/1000 AS adjcount
FROM tblProvLicSpecloc
WHERE DelDate is null
OR DelDate > GETDATE())


IF EXISTS(SELECT var FROM tblDMaxVars WHERE var = 'UPLID Count')
BEGIN
SELECT @OldUPLIDCount = (SELECT var FROM tblDMaxVars WHERE var = 'UPLID Count')
IF @UPLIDCount > @OldUPLIDCount
BEGIN
UPDATE tblDMaxVars
SET value = '' + CAST((@UPLIDCount*1000) AS nvarchar(1000)) + ''
WHERE var = 'UPLID Count'
END
END
ELSE
BEGIN
INSERT INTO tblDMaxVars (var, value, description)
VALUES ('UPLID Count', '' + CAST((@UPLIDCount*1000) AS nvarchar(1000)) + '', 'counts UPLID records and rounds down to the nearest thousand')
END


GO



The table tblDMaxVars only has three columns, none of which are integers, yet I still return this error:


Code:

Syntax error converting the varchar value 'UPLID Count' to a column of data type int.



Please help.