How to get the speed and direction of mobileNode in NS2

Dear everbody,

I’m looking for a way to get the speed and the direction of a mobileNode:
I need this information to modify an existing routing protocole.
I tried to use already existing functions from the class MobileNode.cc :
Mobilenode *node;
double speed = node->speed();
double dx= node->dX(); # direction in the x axis
double dy= node->dY(); # direction in the y axis

but this doesn’t seem to give the right values
Please if someone has any idea of how to add these attributes in a routing protocole: which modification should be done in c++ and tcl files
I’ll be really greateful
Thans in advance
Nadia