Problems with a SELECT SUM() AS statement

When I execute the code around these statements I get the error below. Any suggestions on why or ideas about a better way to a total from a column in a dataset with 3 or 4 filter conditions will be greatly appreciated.

Select SUM(amount) AS SQLTotal FROM T1 WHERE comID = 'C1' AND catID = 'C2' AND mnth = 'March' AND yr = '2004'


LableTotal.Text = SQLTotal;

Compiler Error Message: CS0103: The name 'SQLTotal' does not exist in the class or namespace 'ASP.rptTest_aspx'

Thank you!
iRead

you should have something like this:
LableTotal.Text = Myquery.SQLTotal;