Hey Paule,
If you have 3 different databases and you wish to enter the information into any-one depending on the user input then you need to do something like this
//Suppose you have a dropdown which determines the database
var database; //define a global variant
export function dropdown2_change(event) {
if($w("#dropdown2").value === 'Option A') {
database = 'DatabaseOne';
} else if($w("#dropdown2").value === 'Option B') {
database = 'DatabaseTwo';
} else if($w("#dropdown2").value === 'Option C') {
database = 'DatabaseThree';
}
}
function insertEmail() { //call this function whenver you need to submit a data
let data = {
'email': $w("#email").value //whatever your field keys are
};
wixData.insert(database, data);
}