How to grade out the text field in form

Question

Hi all,
I am using oracle forms 10g.
I have created a form in that i have 10 items, There is field called Currency_code and when the currency_code is USD then there are three fields that need to graded out, when the currency code is not equal USD the user will enter data into that field.
I have tried like this
If :BLock.currency_code= 'USD' then
set_item_property('block.field1',enable,property_false);
set_item_property('block.field2',enable,property_false);
else
set_item_property('block.field1',enable,property_true);
set_item_property('block.field2',enable,property_true);
end if;
end;
In when_form instance trigger. But its not working. Can any one pls tell me how to do this.
Regards
Srikkanth.M

Answer 1

Are you aware that by using the WHEN-NEW-FORM-INSTANCE trigger, this would only get tested when the form starts the first time? In other words, have you coded a way to set ":BLock.currency_code= 'USD' " or anything else at start up? If not, then you don't need this code. Simply set the Enabled field on the Property Palette for "BLock.currency_code" to NO. You can change it back to YES at runtime in some other trigger.
If however, you do set the field programatically somehow, try adding a SYNCHRONIZE at the end of your IF / THEN logic. In other words change it to something like this:
If :BLock.currency_code= 'USD' then
set_item_property('block.field1',enable,property_false);
set_item_property('block.field2',enable,property_false);
else
set_item_property('block.field1',enable,property_true);
set_item_property('block.field2',enable,property_true);
end if;
SYNCHRONIZE;
end;