Count number of times values selected in a dropdown.

[Dave35953053a65j]

Hello, 
First timer here, trying to automate an incident sheet for our fire co.
I'm trying to create scripts to count the number of members who responded on a certain vehicle.
We have a list of 40 people and there is a drop down next to their name. the dropdown has the vehicles list. 
EX: if we have 6 members respond on 52-12 , I would like the script to count the number of times 52-12 was selected in the drop-down and populate that on another field for a total. Simplifying things for the guys. 

[Dave35953053a65j]

[try67]

What are the names of the dropdown fields?

[Dave35953053a65j]

the drop downs are labeled as the person's name (Last,First).  the spare at the end are "2" through "10"

[Dave35953053a65j]

[try67]

You can use something like this code as the custom calculation script of the text field where you want to show the count of the "5212" values, for example:

var dropdowns = ["Yob, Jordan", "Doe, John"]; // etc.
var total = 0;
for (var i in dropdowns) {
	if (this.getField(dropdowns[i]).valueAsString=="5212v1") total++;
}
event.value = total;

Fill in the first line with the actual field names, and notice that the value used in the script is the export value, not the display one.