help with eval in ile rpg

Okay, I am about brain dead and would appreciate some help if anyone
cares to give it...

I have a program that I need to create a field that is as such:

'/folder/CCYYMMDD/jobnbr_SPLFID_SPLNO_USRDTA.pdf'

CCYYMMDD is the present date.
JOBNBR can be extracted from JOBNAM (26 characters)
SPLFID is a 10-byte input field
SPLNO is a binary numeric field
and USRDTA is a 10-byte input field.

I want to code an "eval" in the rpg program that will create this
field, i.e. trim blanks if any at the end of the SPLFID and USRDTA,
and adds the "/" and "underlines".

Is this possible? Does anyone have some examples of constructing a
field something like this that they would be willing to post/share and
I could perhaps plagiarize for my own use????

I would appreciate any help a ton.
thanks.
ga
nospam.RemoveThis@nospam.fmctc.com