I am using a callback_column using the information from other column using a callback_column function.
This is just an example:
then, the calculation for column total does not work anymore.
I have two questions:
1. Why it happens? It is because the value of a is "<span style='text-align:right;padding-right:30px;width:100%;display:block;'>".$value."</span>" and not the value of a?
Thanks in advance for your support.