form_multiselect or form_dropdown with parser library

[eluser]Unknown[/eluser]
Hi folks,

i have an issue about form helpers using with parser library.
you know form_dropdown accepts an array for options.

in controller:

Code:

...
$this->load->model('mcategory','c');
$this->data['categories']=$this->c->getCategoryList(); // an array with key=>value
$this->parser->parse('new', $this->data);

and view:

Code:

<?php echo form_multiselect('selCategory','{categories}','0','class="required"');?>

it produce

Code:

A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: helpers/form_helper.php

Line Number: 331

getCategoryList() loaded array successfully. tested with print_r.

but it is not working. Ideas?