Enable the new box created to be detected

Author: WeiqSun97

index.html

@@ -55,6 +55,8 @@
 
     <!-- Solver settings for solvers  -->
     <script type="text/javascript" src="js/nodes/solver_settings/fluid_monolithic_solver.js"></script>
+    <script type="text/javascript" src="js/nodes/solver_settings/structural_mechanic_solver.js"></script>
+
 
     <!-- Auxiliary nodes required by solver settings -->
     <!-- Other nodes -->