GeoModelXml problem: creating the materials by using 'materialref' tag .
I'm using the GeoModelXml to build the HGTD geometry but when I tried to construct a material base on others materials by using
Here an example.
<material name="CuKapton" density="2.94"> <materialref fraction="0.3858" ref="Kapton"/> <materialref fraction="0.6142" ref="Copper_Ma"/> </material>
When I was running gmex, it shows me the error message:
MEX!!!VP1MESSAGE: VP1QtApplication: std::exception: VP1QtApplication: Error 'evaluate: empty or white space expression. Last good expression was 2.94' sending event '11QTimerEvent' to object '' ('6QTimer') throwing the exception again... terminate called after throwing an instance of 'std::exception' what(): std::exception Aborted (core dumped)
Many thanks for any help.