# How to use gform\_calculation\_result filter with trigger functions?
**URL:** https://community.gravityforms.com/t/how-to-use-gform-calculation-result-filter-with-trigger-functions/9708
**Category:** Get Help
**Tags:** gform\_calculation\_result
**Created:** [June 6, 2021, 9:39pm UTC](https://community.gravityforms.com/t/how-to-use-gform-calculation-result-filter-with-trigger-functions/9708 "2021-06-06T21:39:01Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@user60acc28bb32d6018](https://community.gravityforms.com/u/user60acc28bb32d6018)
#### Post date: [June 6, 2021, 9:39pm UTC](https://community.gravityforms.com/t/how-to-use-gform-calculation-result-filter-with-trigger-functions/9708/1 "2021-06-06T21:39:01Z")
Hello, my programming skills are very basic. I have searched the forum for the answer to my problem and I have not been able to find a good solution.
It is about finding a way to use the filter “gform\_calculation\_result” in combination with other functions that allow to automatically activate the calculations:
“jQuery(document).ready(function(){}”
and
" jQuery(’#input’).on(‘change’,function (){}"
If for example I use:
```
jQuery(document).ready(function(){
jQuery('#input_1).on('change',function (){
result //calculation result
});
});
gform.addFilter('gform_calculation_result', function( result, formulaField, formId, calcObj ) {
if ( formId == '217' && formulaField.field_id == '3' ) {
result = ;
}
return result;
} );
```
The filter works but I can’t use the result of the calculations in the filter because it is contained in the previous function.
And if I use
```
gform.addFilter('gform_calculation_result', function( result, formulaField, formId, calcObj )
jQuery(document).ready(function(){
jQuery('#input_).on('change',function (){
calculation
});
});
return result;
});
```
Don´t work.
I have tried other combinations to place “Filter” with “jQuery (document) .ready (function () {” with “jQuery (’# input \_). On (’ change ', function () {” but I have not found a way that everything works well to the time.
For example, In a theoretical case like this (in real case the calculations would be much more complex and only possible with JS), How could it be used the filter?
“gform.addFilter(‘gform\_calculation\_result’, function( result, formulaField, formId, calcObj )” to save the result in field id = 3
```
jQuery(document).ready(function(){
jQuery('#input_217_1,#input_217_2').on('change',function (){
a = jQuery('#input_217_1').val();
b = jQuery('#input_217_2').val();
result = a*b;
return result;
});
});
```
Thanks in advance
---
### Author:  [@richardw8k](https://community.gravityforms.com/u/richardw8k)
#### Post date: [January 5, 2022, 8:33am UTC](https://community.gravityforms.com/t/how-to-use-gform-calculation-result-filter-with-trigger-functions/9708/2 "2022-01-05T08:33:10Z")