drop-down list field names: Allocated space, Subscription duration
product field name: My subscription
I have a problem with the creation of my form on formidable:
i have a drop-down list field "allocated space" (200 GB, 500 GB, 1TB) another subscription duration (3 months, 6 months, 12 months), another that sets the prices in my subscription with the base price 3 months at €35 for a storage of 200 GB. how to create the conditions for the rest in order to automate the process? unfortunately formidable form does not allow to create conditional logic with 2 fields like If “allocated space” is “200 GB” and “duration” is “3 months”, then the price is 35.

by doing some google searches I read that I could add code snippet with the wpcode plugin. here is my code used
document.addEventListener('DOMContentLoaded', function() {
var espaceAlloue = document.querySelector('[name="Espace réservé"]');
var durée = document.querySelector('[name="Durée de l\'abonnement"]');
var prix = document.querySelector('[name="Mon abonnement"]');
function updatePrix() {
var espaceValue = espaceAlloue.value;
var duréeValue = durée.value;
var prixValue = 0;
if (espaceValue === '200 Go') {
if (dureeValue === '3 mois') {
prixValue = 35;
} else if (dureeValue === '6 mois') {
prixValue = 35 * 2 - 5; // Example of discount for 6 months
} else if (durationValue === '12 months') {
priceValue = 35 * 4 - 10; // Example of a discount for 12 months
}
} else if (spaceValue === '500 GB') {
if (durationValue === '3 months') {
priceValue = 50; // Example of a price for 500 GB and 3 months
} else if (durationValue === '6 months') {
priceValue = 50 * 2 - 10; // Example of a discount for 6 months
} else if (durationValue === '12 months') {
priceValue = 50 * 4 - 20; // Example of a discount for 12 months
}
} else if (spaceValue === '1 TB') {
if (durationValue === '3 months') {
priceValue = 70; // Example of price for 1TB and 3 months
} else if (durationValue === '6 months') {
priceValue = 70 * 2 - 15; // Example of discount for 6 months
} else if (durationValue === '12 months') {
priceValue = 70 * 4 - 30; // Example of discount for 12 months
}
}
price.value = priceValue;
}
espaceAlloue.addEventListener('change', updatePrix);
duree.addEventListener('change', updatePrix);
});
but after saving and activating it did not have effect