Z level limit reached for current landscape


I’m facing a problem for a few days in Unreal Engine 4 concerning the Z axis limit. I’m currently using a landscape with overall resolution of 505x505 with 8x8 components having a 63x63 quads. Is there any way I can increase this limit without having to restart my current project or without deforming the terrain? I’m using World composition if that’s important and the terrain I have made my self, not in World Machine. I have tried a lot of things but nothing seems to work for me, like I said this issue has gotten my project stuck and I don’t want to lower the current mountain, just add a pick to it. I appreciate all the help with this problem.