How to pass user defined parameters to text key?

Hi all,

when I am passing user defined value to text key I am getting null value.

for example:

<#assign responseCat=rest('/categories/id/${catID}?restapi.format_detail=full_list_element&restapi.response_style=view').category/>
<#assign catIdTitle=responseCat.title/>
<#assign catHref=responseCat.@view_href/>           
<li id="product-category-link" title="${text.format("product-category-navigation",catIdTitle)}">
   <a href="${catHref}">${text.format("product-category-navigation",catIdTitle)}</a>
</li>

Is there any other way to pass parameter to text key??

Thanks,

Bhakti.