easystar update grid #12

Hi, using Phaser Plugin.
Tried to update the grid via:

pathfinder.setGrid( mapLayerData, walkables );

path retuned is null.

• pathfinder (easystar plugin loaded)
• mapLayerData -> The grid data,
• walkables -> walkable tiles.

initialization works fine, but when I add / remove tiles I want to update the grid,
so I call again:

pathfinder.setGrid( mapLayerData, walkables );

Since then the returned path is always null:

pathfinder.setCallbackFunction(function(path) {... console.log(path); //returns null }

best regards,

sam