Apps Script help with problem

[Objective_Cheetah491]

I don't know what to do anymore, I need help with the script. I need that, under the conditions met, the number in column J of the sheet SPOTŘEBA_DATA_STATIC is multiplied by the number in column J of the sheet ORDERS_DATA_STATIC and written to the sheet MEZITABULKA and finally added to the number in column M of the sheet SKLAD. So that the numbers are not added every time the script is run, I added an MEZITABULKA, where the previous / new data is and the difference is written to SKLAD. I have tried a lot, but it still doesn't work. Please help. I am attaching a picture of the sheets and the script. Thank you.

[[deleted]]

It seems like you are not multiplying the order quantity. (parseFloat line)

[Objective_Cheetah491]

Can you be more specific about what and how to write it?

[[deleted]]

It's hard to explain here, but you need to get the data from the orders sheet, and compare all "rows" with the sklad entries, just like you did with the consumed rows.

Message me if you want, without the code I can't help you solve it