Hi,
Thanks for the reply, but I can't get it to work.
I've connected my screen to this post
My Gallery is Called OmzetGalleryGroep: Items: SortByColumns(Tabel1; "GroepNaam"):
And consists of:
. Groep: from the datasource Tabel2
. Leerkracht: from the datasource Tabel2
. OmzetGalleryGroepAantal (# strippen on the screen): Default: CountIf(Tabel3;Groep=ThisItem.GroepNaam)
. OmzetPerGroep (Omzet on the screen): Default: OmzetGalleryGroepAantal*OmzetStripprijs
I can't select the field OmzetPerGroep under Series, please refer to the image