Check field equal a value once it is clicked

[Daidrien26152486mi89]

How can I make a check mark equal a number in a different field once its clicked?

[Nesa Nurani]

This is a very vague explanation, can you please elaborate?

[Daidrien26152486mi89]

How can I make text1 equal 500 when the check mark is checked? 

[Nesa Nurani · Accepted solution]

As 'Mouse UP' action of that checkbox, add this script:

if(event.target.value != "Off")this.getField("Text1").value = 500;

[Daidrien26152486mi89]

It worked. Thank you!!

[Daidrien26152486mi89]

How can I make it so it subtracts the value from the field if the checkmark is unselected? 

[Luxurynightmares]

Update your code to this:

if(event.target.value != "Off")this.getField("Text1").value = 500;
else
this.getField("Text1").value = "";