formating validation results

Hi, 
I have a script responsible for validation and when an error occurs it will be return :   
#return RESPONSE.redirect('show_zpt?formErrors=%s&value2=%s' %(error, value2))

then in 'show_zpt' it will be use :
<!--
<div tal:condition="request/formErrors|nothing" class="portalMessage" tal:content="request/formErrors"></div>
-->
and message:
{'surname': 'Input is required but no input given.'}

but I don't want to have this message format, it would be better to have something like this:

surname: Input is required but no input given. - without this additional marks!

What I should change to have this message format? 

Thanks and regards!


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