FacetTag facetTag = new FacetTag();
facetTag.setPageContext(pageContext);
facetTag.setName(Facets.LAYOUT);
facetTag.setParent(panelTag);
facetTag.doStartTag();
GridLayoutTag gridLayoutTag = new GridLayoutTag();
gridLayoutTag.setPageContext(pageContext);
gridLayoutTag.setRows(createStringValueExpression("fixed;*;fixed"));
gridLayoutTag.setParent(facetTag);