Arrays in Smarty

Hi there - I'm having a bit of trouble with arrays in smarty and what hoping someone could help. In my php file I have an array called $picks filled and assigned to a smarty variable. In my template, I'm using cycle to loop through some html code: {section name=i loop=$matches} <tr> <td><input type="radio" name="pick[{$matches[i].id}]" value="1"{if $picks.[$matches[i].id]==1} SELECTED{/if} ><b>{$matches[i].team1}</b></td></tr> {/section} I need to get the value of $pick['x'], where 'x' is equal to the value of $matches[i].id But the syntax above does not seem to be valid, and the other things I've tried aren't working either. Anyone know a way to do this? TYIA.