Cannot update table data based on values of numeric fields

Question

I have a button on a form with two numeric fields: P11_numeric1 and P11_numeric2.
I want to be able to either run a stored procedure or execute the update logic. We're on apex 4.0.
I tried the follow syntax in a process run by a button:
begin
schema.procname(:P11_numeric1,:P11_numeric2);
end;
And nothing happened.
If I try to run the proc in toad with hard coded parameter values, the proc works.
I tried this:
begin
update schema.tablename
set value=:P11_numeric1
where id=:P11_numeric2;
commit;
end;
And this doesn't work.
I tried:
begin
update schema.tablename
set value=1
where id=2;
commit;
end;
And that worked, so I assume the issue is with getting the numeric field values. Am I using incorrect syntax?

Answer 1

I'm on apex 4.0.2 btw. I had two main problems: 1) the process that my procedure was in was in a sequence number lower than the MRU process sequence number. I didn't want to use the MRU so I changed it to being called by ajax calls only (which I don't have on the page, effectively not firing this process on page submit). Changing the sequence number of the process call to the procedure higher then allowed me to run the stored procedure.
The next problem was that the fields weren't being passed into the proc.
It looks like the type of the field made a bit of a difference to sending in the parameter for the procedure. The data is either integer or numeric and if the fields were set to a text field, and the proc was changed to accept varchar2 data and convert using to_number in the proc that the data was accepted and was fine. For the integer fields, I was able to (and wanted to) change the field type to display only as this is a read only screen with an button to save the data. For the numeric fields, for some reason the display field type did not allow the field value to be passed to the stored proc.
I'll take a look at the session values not getting set but has anyone heard of that happening to display only fields with numeric data specifically?