Hello Edward

Many thanks for your useful help.
on my reply i forgot to ask you if in your code i can place where you have write:
.RemoveObject(oColumn.name)

"on lostfocus" or after changing "Afterrowcolumnchange" value of this column, some code for make for example a calculation in another column automatically.
for example :
1 column have % value - 21%
2 one column - total of value
3 another one = amount = total value * 21%
i want when a change 21% to 10% then total value is automatically recalculate, or, if i write on the column of Totalvalue then recalculate the percent value %

I hoop my question don´t make a little confused, but in this moment this is what i need to do , and on my first code i loop all the time.

Best regards Edward

Luis Santos