I work with OpenERP 7 and I want to add my company logo in the product's ticket label, after adding the line

<logo type="field" name="company_id.logo"/>

in product_label.xml file, and

<para style="nospace"><xsl:value-of select="logo"/></para>

in product_label.xsl the logo does'nt apear.

Please can any one help me and show me the right way to do that.

Thanks in advance.