Calculations in flows

You have asynchronise “bug”.

You Set Electra Meter Eind as first, but Homey runs it asynchron (all at once, not in a sequence).
So 3 cards later (the 4th condition card) you allready use the Electra Meter Eind tag, while it probebly will not have ben set yet!

You should increase every actioncard with a one-second-more-delay-then-the-previous-card.
That way it will be executed in sequence (mostly, not always tho, if your Homey is busy for example).

(Or use the H.O.O.P. (Hope) - Homey Object Oriented Programming App which i created to solve this kind off problem (you can choose to execute the Actioncards synchronised (sequentuel).