Get graph data which create from OSMParser and update tag of edge

In newest version of graphhoper. I need to get graph data which create from OSMParser and update tag of edge. Example: edge A has tag lanes is 2, but now I need to change value lanes to 3 but not build OSM again. I hope to receive lots of solutions from readers on this forum.

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I think this idea is very good. But I don’t understand how it works.

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