Calculated Field with IfThenElse don't work for me

[Dennis A]

Hello,
i try to set a monthly fee for the entity "Vertrag" based on a selected "produkt". I use this code

ifThenElse(
    entity\isAttributeChanged('produkt') && produkt = 'Basic Webseite',
    mtlVertragswert = 179.00,
    ifThenElse(
    entity\isAttributeChanged('produkt') && produkt = 'Premium Webseite',
    mtlVertragswert = 349.00,
    ifThenElse(
    entity\isAttributeChanged('produkt') && produkt = 'Local Marketing Plus',
    mtlVertragswert = 79.90,
    ifThen(
    entity\isAttributeChanged('produkt') && produkt = 'Local Marketing Profi',
    mtlVertragswert = 99.80
    ))));

The only result I can see is, that the monthly fee is 179.00 € no matter which "produkt" is selected.

What is the fault?

Thank you all for helping me.

Greets
Dennis

[Maximus]

Hello, use this formula:
ifThen(produkt == 'Basic Webseite', mtlVertragswert = 179.00);
ifThen(produkt == 'Premium Webseite', mtlVertragswert = 349.00);
ifThen(produkt == 'Local Marketing Plus', mtlVertragswert = 79.90);
ifThen(produkt == 'Local Marketing Profi', mtlVertragswert = 99.80);

When you will change one of this product and click save, the mtlVertragswert will change automatically.

[Dennis A]

Hi Maximus,

thank you. What a stupid mistake ...