Hi, I am new to bubble
And I have a simple problem
I am building a form to add a new reservation for a real estate reservation management software such as hotels
The problem is that in the reservation addition form, the last 3 inputs are the reservation amount
The security deposit amount
And the remaining amount
The idea is that I want the last option, which is the remaining amount, to be read-only and be like a display for the result of a small calculation of the reservation amount minus the security deposit amount = the remaining amount
Although I expect this matter to be simple, I did not know how to do it. I watched a lot of educational videos and did not know how
So to save time, I hope someone can explain to me how to do it
In short, I want input 1 - input 2 = input 3
