I'm double condition to do a test on my progressmeter. This the fist condition that I use:
<zk if="${item.progres <= '33'}">
<style> span.z-progressmeter-image{ background-image:url('images/vert.GIF'); } </style>
</zk>
When I run the program I have this error:
The value of attribute "if" associated with an element type "null" must not contain the '<' character.