fix environment variable

Golden_Repo/j/JupyterProxy-Matlab/JupyterProxy-Matlab-0.8.0-GCCcore-11.3.0-2023.3.6.eb

@@ -114,10 +114,14 @@ postinstallcmds = [
     'chmod +x %(installdir)s/bin/Xvfb'
 ]
 
+
+modextravars = {
+    'MWI_USE_EXISTING_LICENSE': 'True',
+}
+
 # Jupyter-matlab-kernel DISABLED:
 # https://github.com/mathworks/jupyter-matlab-proxy/issues/62
 modextrapaths = {
-    'MWI_USE_EXISTING_LICENSE': 'True',
     # 'MWI_CUSTOM_MATLAB_ROOT': 'lib/python%(pyshortver)s/site-packages/jupyter_matlab_proxy/',
     # 'JUPYTER_PATH': ['share/jupyter'],  # add search path for kernelspecs
 }