reset value of global feild for each record
I have a Global field, which has drop-down value list of all the Subjects,
Depending on the value in Global field, the results of the subject will be displayed on the Portal. But the normal behaviour of Global field is it keeps the value for all the records,
I would like to reset it to say all, so that by default portal displays results for all Subjects and if value changes in global field the portal should display records accordingly.
I would have done it using checkbox if i have 3 or 4 subjects,
Also how would i define All in the drop-down list, as it is not custom value list, it gets the list from different table.