how to use the gusset sheet metal for solid work 2009?i only can use the gusset in weldments

as you can see in this picture..the gusset sheet metal is not there...or dis is the limition for version 2009?..

if i using the gusset in weldments, the edge cannot be select because it was mention that the edge does not intersect..than i need to extrude cut the edge to make it sharp conner

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