new file mode 100644
--- /dev/null
+++ b/examples/myset.c
@@ -0,0 +1,33 @@
+#include "mex.h"
+
+void
+mexFunction (int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
+{
+  char *str;
+  mxArray *v;
+
+  if (nrhs != 2 || ! mxIsString (prhs[0]))
+    mexErrMsgTxt ("expects symbol name and value");
+
+  str = mxArrayToString (prhs[0]);
+
+  v = mexGetArray (str, "global");
+
+  if (v)
+    {
+      mexPrintf ("%s is a global variable with the following value:\n", str);
+      mexCallMATLAB (0, 0, 1, &v, "disp");
+    }
+
+  v = mexGetArray (str, "caller");
+
+  if (v)
+    {
+      mexPrintf ("%s is a caller variable with the following value:\n", str);
+      mexCallMATLAB (0, 0, 1, &v, "disp");
+    }
+
+  // WARNING!! Can't do this in MATLAB!  Must copy variable first.
+  mxSetName (prhs[1], str);  
+  mexPutArray (prhs[1], "caller");
+}