Global_planner can not find a low-cost path as in NavfnRos

[GeorgeKonno]

Hi guys, when I implement move base in my robot, the default global path plan method was set to NavfnRos with no issue, the path is good, but we know Global-planner is the developed method to this one, so I change the method to Global_planner. What I found is the path by no matter A_star or dijkstra will always give a path based on closest distance instead of cost.
I am not sure if there is any parameter should be set to let the path consider the cost more than distance as in NavfnRos. I have tried the potential value + current index cost value in global_planner A*, but the result seems no change.
Any one have similar issue to me? Thank you for any suggestion to me.