text and value of field together

[William]

If =fields.ContractedQty > 0 I want my value to show

txtQty.Value = Convert.ToDouble(txtQty.Value).ToString("###,###,##0") + " Gal"

if =fields.ContractedQty = 0 I want my value to show

txtQty.Value = Convert.ToDouble(txtQty.Value).ToString("###,###,##0") + " Gal (Optional Delv. Location)"

How can this be done.  I have tried txtQty.DocumentMapText but it is empty so that does not work.

[Squall]

Seems out of context. What is txtQty? Why you are not using expressions (http://www.telerik.com/help/reporting/report-expressions.html)