Operator IN / NOT IN Recursive function

Hello,

I have to scroll Reservation Entry table recursively with a lot of
conditions of filter.

this is a function called more times

T337.setrange(....);
T337.setrange(....);
T337.setrange(....);
T337.setrange(....);
T337.setfilter('Entry No.','<>%1',prev.'Entry No.');

now I have a case where the loop is infinite and Navision client closes.

I understand that last filter condition is not enough because if there are
more records with identical previous conditions I can return on previous one
so I have to substitute it in a manner similar to this

declare a variable where I insert all previous Entry No. already scrolled
and then use a new filter similar to following

T337.setrange(....);
T337.setrange(....);
T337.setrange(....);
T337.setrange(....);
T337.setfilter('Entry No.','NOT IN [%1]',prev.myVar);

The problem is that myVar should be of types text to concatenate previous
Entry No separated by commas [,] but after it doesn't go right because 'Entry
No.' of setfilter is of type Integer.

What do you suggest?

Thank you very much