Help with price calculation tool

Good morning,

Is anyone here familiar with the plugin: “E&P form builder by Loopus? ” https://codecanyon.net/item/wp-cost-estimation-payment-forms-builder/7818230

I am working for a client to make a price calculation for the number of solar panels per number of residents, only I am not very handy with java script.

This is an example of how I made it, only this does not work:

if([item-418_quantity] ==2) {
[price] = [item-286_price]*4
}
if([item-418_quantity] ==4) {
[price] = [item-286_price]*8
}
if([item-418_quantity] ==6) {
[price] = [item-286_price]*12
}
if([item-418_quantity] ==8) {
[price] = [item-286_price]*16
}

Here “item-418_quantity” is the number of persons and “item-286_price” the price of 1 solar panel which in this example costs 299.6 euro.

So for two people the price should be 1,198.4, but now it is 2,696.40.

What am I doing wrong?

• This topic was modified 4 years, 4 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Developing with WordPress topic

The page I need help with: [log in to see the link]