Scripting conditionals involving lists

There are many ways to do this. first you need to specify which episode belongs to which trilogy in here I chose a table within the form because I think its just easy using the specified fields.

After setting up pick list SS1
and Setting up form with table SS2

this code on script SS3:
I am pretty new to tapforms and there maybe better ways to do this. also you need to replace the field value ID’s with the ones in your own script by pulling them from the available fields.

// initial variables
var episode = record.getFieldValue('fld-9e272cfa06144cfe94f46639cc4d651d');
var table = record.getFieldValue('fld-fd2390f763264167809191f09badbbd2');

//default no match variable in case it is not found.
var result = "no match"

// for loop to search for a match
for (var index = 0, count = table.length; index < count; index++){

// table variables
var episodes = table[index].getFieldValue('fld-8b366549607a4664a2ad3cf9b77676f3');
var trilogy = table[index].getFieldValue('fld-05603762b3ec47e19cedd2f0c1abc1a3');

// if it finds match returns it.
if (episodes == episode) {
console.log(trilogy)
	result = trilogy
} else {
	// false condition;
}
}
result;

you can hide the table in the form SS4