diff --git a/src/cosim/osp_config_parser.cpp b/src/cosim/osp_config_parser.cpp
index 5629852c0..3e4ca75b4 100644
--- a/src/cosim/osp_config_parser.cpp
+++ b/src/cosim/osp_config_parser.cpp
@@ -354,7 +354,7 @@ osp_config_parser::osp_config_parser(
                 int inputCount = boost::lexical_cast<int>(tc(functionElement->getAttribute(tc("inputCount").get())));
                 function.inputCount = inputCount;
                 int dimension = boost::lexical_cast<int>(tc(functionElement->getAttribute(tc("dimension").get())));
-                function.dimension = inputCount;
+                function.dimension = dimension;
 
                 for (int i = 0; i < inputCount; i++) {
                     const std::string sgName = "in[" + std::to_string(i) + "]";