Index: /issm/trunk/src/c/io/WriteData.cpp
===================================================================
--- /issm/trunk/src/c/io/WriteData.cpp	(revision 4778)
+++ /issm/trunk/src/c/io/WriteData.cpp	(revision 4779)
@@ -129,4 +129,11 @@
 
 		*pdataref=mxCreateDoubleScalar((double)integer);
+
+}
+/*}}}*/
+/*FUNCTION WriteData(mxArray** pdataref,int boolean){{{1*/
+void WriteData(mxArray** pdataref,bool boolean){
+
+	*pdataref=mxCreateDoubleScalar((double)boolean);
 
 }
Index: /issm/trunk/src/c/io/io.h
===================================================================
--- /issm/trunk/src/c/io/io.h	(revision 4778)
+++ /issm/trunk/src/c/io/io.h	(revision 4779)
@@ -23,4 +23,5 @@
 void WriteData(mxArray** pdataref,double* vector, int M);
 void WriteData(mxArray** pdataref,int integer);
+void WriteData(mxArray** pdataref,bool boolean);
 void WriteData(mxArray** pdataref,double scalar);
 void WriteData(mxArray** pdataref,char* string);