Creating monthly salesOrders through AdvancedPack

[emillod]

Hello guys!
I want to ask for help

I have montly salesOrders and quotes which are creating right now through external PHP script. I want to move that to AdvancedPack BPM.
I'm not sure is that possible, but every single salesOrder have in itemList few items with DIFFERENT description.

For example:
Item #1: Service ABC for period from 01.01.2021 to 31.01.2021 - price $10
Item #2: Service DEF for period from 01.01.2021 to 31.01.2021 - price $20
etc.

Is that possible?
I've tried few ways. for example running service action, but unfortunatelly there i can add in JSON field only static values.

Any ideas?
Maximus maybe you could help?

[emillod]

I wonder, maybe i could just create related entity to sales orders?

After many hours, done!