Thanks,
here is what I want to do.
1)I would like user to fill required info in the form, called serverconnectform1.
2)but serverconnectform1 is too big, so I divided it into 4steps, by refering to https://docs.wappler.io/t/creating-multi-steps-forms/10799
3)if validate all the information in the form, when serverconnectform1 is submit, it is too many and I don’t want users to go back to the previous step or even before to correct input information.
4)So I would like to validate input data step by step.
5)on this 1st step, I need to check the data existence only for eventname in the database.
At the beginning, I was trying to do How to validate form input value realtime?
but I changed my mind, now I am trying to do the current question one.