woo_usn_addon.js

/**
this filter take in parameter data who is an object build like this :  
 data = {   
          api_choosed : your_sms_gateway_name,   
          first_api_key : your_first_sms_gateway_api_key,  
          second_api_key : your_second_sms_gateway_api_key   
};  **/ 
wp.hooks.addFilter( 'woo_usn_save_gateways_data',  data );