set two different labels for two different pages that use the same form - symfony

I have a form and I need to set labels for two different kind of pages. I tried to used $this->widgetSchema->setLabels... with an if and with $sf_params->get('module') and $sf_params->get('action') but I got an error saying that $sf_params is an undefined variable. What can I do to solve this开发者_JS百科?

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In your template, you can pass to renderLabel() the label you want.

$form['xxx']->renderLabel('Your label')