I tried called css import but cannot evaluate xslt variable , is there any other way of doing this
<xsl:template match="/" priority="1">
<xsl:variable name="RecipeId" select="page/abc/a'" />
<xsl:variable name="CampaignId" select="page/abc/a" />
@import "lander_umetrix_264.css?ucid={$CampaignId}&urid={$RecipeId}";
<!--@import "lander.css";-->
@import "nav_umetrix_264.css?ucid={$CampaignId}&urid={$RecipeId}";
</xsl:template>