What if like this... I have to put the budget value first in the txtBudget, then I need to click the cmdCalculate to have the balance calculated being in the txtBalance.... I really need a detail explaination, which codes to put in the FlexGrid, which in the txt and cmd... Plz... I need your kind help... I'm not an IT student, and don't have a good teacher about it.. Only God who knows how to repay your help.. Plz..