Index: trunk/Ohana/src/opihi/lib.shell/variable.c
===================================================================
--- trunk/Ohana/src/opihi/lib.shell/variable.c	(revision 7917)
+++ trunk/Ohana/src/opihi/lib.shell/variable.c	(revision 8134)
@@ -314,2 +314,13 @@
   return;
 }
+
+int SelectScalar (char *string, double *value) {
+
+  char *end;
+
+  /* if string is a number, return TRUE */
+  *value = strtod (string, &end);
+  if (end == string + strlen(string)) return (TRUE);
+
+  return (FALSE);
+}