hi,
thank you,
but i need to sum this times as..
1.thisform.text1.value=14:35 then thisform.totaltxt.value=14:35
2.thisform.text1.value=16:35 then thisform.totaltxt.value=31:10
3.thisform.text1.value=4:35 then thisform.totaltxt.value=35:45 etc...
thanks.
m.qasem

>>if thisform.text1.value=14:35 then thisform.totaltxt.value=14:35
>In VALID event of the TextBox:
>
>

>** Valid EVENT of the Thisform.Text1
>LOCAL ret_val
>
>ret_val =  VAL(LEFT(this.Value,2))     < 24 .AND.;
>           VAL(SUBSTR(this.Value,4,2)) < 60 .AND.;
>           VAL(RIGHT(this.Value,2))    < 60
>IF ret_val
>   thisform.TotalTxt.Value = thisform.TimeAdd(this.Value, thisform.TotalTxt.Value)
>ENDIF
>
>RETURN ret_val
>