Create hooks Custom Field for Jetengine Crocoblock

open Jetengine plugin 
in \wp-content\plugins\jet-engine\includes\modules\forms\builder.php

Add custom filter in function 
public function render_form( $force_update = false ) {

//this is custom hook that need to add in jetengine
$this->rows = apply_filters( 'customjetengineform',   $this->form_id, $this->rows );

in \wp-content\themes\themesfolder\function.php

add_filter('customjetengineform','function_customjetengineform', 10, 2) ;
function function_customjetengineform($form_id, $data){
	$loop = $data ;
	$nama[0]['value'] = 'abu';
	$nama[0]['label'] = 'abu';
	$nama[1]['value'] = 'luqman';
	$nama[1]['label'] = 'luqman';

	

	foreach($loop as $key => $val){
		if($key == 4)
		$data[$key][0]['settings']['repeater_fields']['2']['settings']['field_options'] = $nama ;
	}
	
	//print_r("<pre>");print_r($data);
	return $data;

}

For Admin Form

open Jetengine plugin 
in \wp-content\plugins\jet-engine\includes\components\meta-boxes\post.php

Add custom filter in function 
public function prepare_meta_fields( $meta_box = array() ) {

//this is custom hook that need to add in jetengine
$meta_box = apply_filters( 'customjetengineformadmin',  $this->get_box_id(),  $meta_box );

in \wp-content\themes\themesfolder\function.php

add_filter('customjetengineformadmin','function_customjetengineformadmin', 10, 2) ;

function function_customjetengineformadmin($form_id, $data){
	//print_r("<pre>");print_r($data);exit();
	$loop = $data ;
	$nama[0]['key'] = 'abu';
	$nama[0]['value'] = 'abu';
	$nama[1]['key'] = 'luqman';
	$nama[1]['value'] = 'luqman';

	

	foreach($loop as $key => $val){
		if($key == 4)
		$data[$key]['repeater-fields'][2]['options'] = $nama ;
	}
	
	//print_r("<pre>");print_r($data);
	return $data;

}