Please check the attached new project and sample data.
I did some changes, form can be submitted properly through each cap from input data source.
1) Most important change is to set 'AJAX' action for 'Cap' form field, and I've revised action events in advanced options.
2) 'Cerca' form submit template should use 'Full page load' action without 'Start new web browser' option.
3) With 'Cap' form field, I've set 'Data value' = 'all' with 'Lookup data source' , therefore, it does input / iterate through all 'Cap' values .