problems with derivation strategy for cover eligibility

Hallo,

We try to generate cover eligibility and our derivation strategy doesn't seem to work.

We use internal number. We want to generate a cover eligibility different for every second string in commitment item.

Our derivation strategy is:

- conditions: BUD_ADDRESS-FMAREA = (ours)

BUD_ADDRESS_SUPPL-CISUB1 = 'G'

- source fields: BUD_ADDRESS-FISCYEAR

BUD_ADDRESS_SUPPL-CISUB2

- target fields: BUD_ADDRESS_SUPPL-CISUB2

We have try to fill table with different data:

- first try: source fields: FISCYEAR = 2010 / CISUB2 = 10400 === target fields: CISUB2 = 10400

- second try: source fields: FISCYEAR = 2010 / CISUB2 = 10400 === target fields: CISUB2 = (blank)

Thanks in advance