need a script to create a behavior

[phalgun_reddy]

Hi 
I have a custom field environment(custom field_10044) which is a select list 
in which if we select prod in the list four of custom fields should be populated.
Change failure comments(custom field_10049)

change failure(custom field_10046)

defect leakage(custom field_10047)

defect leakage(custom field_10048)

if we select the rest in the environment(custom field_10044) the above 4 custom fields nothing should be populated.

need this behavior while creating an issue 

kindly help

[phalgun_reddy]

// Insert the Jira UI modifications API script for the behaviour.

var environmentField = getFieldById('customfield_10044');
var defectleakagercacommentsField = getFieldById('customfield_10048');

logger.info('Value : '+ environmentField.getValue().name);

if(environmentField.getValue().name == 'Prod'){
defectleakagercacommentsField.setVisible(true);
logger.info('true');
} else {
defectleakagercacommentsField.setVisible(false);
logger.info('false');
}

i have written the script

The above script is working