How to add two numbers in sugar crm - sugarcrm

Question

I made module addition and in this made three fields amount1_c, amount2_c and total_amount_c to add the two numbers and display the result in the third field. I done coding in the logic looks here is my code
<?
$hook_version = 1;
$hook_array = Array();
$hook_array['before_save'] = Array();
$hook_array['before_save'][] = Array(1,'calculate_field', 'custom/modules/cases/LogicHookMath.php','LogicHookMath', 'calculate_field');
?>
and made one more file logic hook math. here is my code for
<?php
class LogicHookMath {
function calculate_field(&$bean, $event, $arguments) {
$field1 = $bean->amount1_c;
$field2 = $bean->amount2_c;
$field3 = $field1 + $field2;
$bean->amount_total_c = $field3;
}
}
?>
but still i did not get any result. Please help me out for this.

Answer 1

The code looks correct.
Some common "mistakes" when custom logic hooks are not working:
Make sure, the custom logic hook has the correct name (LogicHookMath.php)
Make sure, that the $bean variable is prefixed with &, so the variable is passed as a reference
Make sure the logic_hooks.php and the LogicHookMath.php files are readable by the web server user
The entire custom directory should also be writeable for the web server user
If the above does not help, try logging the progress to the sugarcrm.log using $GLOBALS['log']->info( "Value 3: ". $field3); in the custom logic hook.