Please how do i add code to enable addition? *All details below*

[Charlie303735890y2h]

i have a drop down with this code: 

} else if (event.value=="") {

this.getField("Text1").value = "1";

this.getField("Text2").value = "";

this.getField("Text3").value = "KG"

} else {

this.getField("Text1").value = "1";

this.getField("Text2").value = "";

this.getField("Text3").value = "KG";

}

I am trying to add code so i can add all of the weights together for the net weight to be populated in another text box. is this possible and can anyone help me do it please? thank you!

[PDF Automation Station]

"if i could have one line bit of code instead of 40 lines of seperate code that would be immense. i am not sure if thats possible though..."  There's a real easy way to do this form by deleting all of your fields except the first row, changing there names to remove all suffixes, anticipating the field names after you use Right-Click > Create multiple copies, using export values in the dropdowns, entering the script that anticipates what the field names will be, then creating the rest of the fields with Right-click > Create multiple copies. This article (with video) explains it all:

https://pdfautomationstation.substack.com/p/anticipating-field-names-in-custom