Calculation with Minimum Value

[#1]

How do I write a custom calculation for:

Text1 + Text2 + Text3 = Text20

If sum is 0 then value is 0

If sum is any number between 1 - 300 then value is 300

If sum is >300 then value is sum

Here is what is NOT working:

if( Text20 <= 300 ) {

event.value = 300; // value is 300 when sum is less than or equal to 300;

} else {

if ( Text20 == 0 ) {

event.value == 0; // value is 0 when sum is equal to 0;

} else {

event.value = Text20; // else value is the sum;

}

}

[#2]

How do I write a custom calculation for:

Text1 + Text2 + Text3 = Text20

If sum is 0 then value is 0

If sum is any number between 1 - 300 then value is 300

If sum is >300 then value is sum

Here is what is NOT working:

if( Text20 <= 300 ) {

event.value = 300; // value is 300 when sum is less than or equal to 300;

} else {

if ( Text20 == 0 ) {

event.value == 0; // value is 0 when sum is equal to 0;

} else {

event.value = Text20; // else value is the sum;

}

}

[#3]

Looks about right, except you are missing the compulsory "getField" call.

[#4 · Accepted solution]

Use this code as the custom calculation script of your field:

var total = Number(this.getField("Text1").valueAsString) + Number(this.getField("Text2").valueAsString) + Number(this.getField("Text3").valueAsString);
if (total>1 && total<300) total = 300;
event.value = total;