How to create Animated dotted lines along a spline with trim feature

Hello UE community, I’m new to Unreal Engine.

I am trying to create an animated mesh array that follows a spline/ curve like the video attached Mesh along a curve
. It will look something similar to trim the path effect inside After Effects.

It shall be used to show connection between two places on a world map in 3d. I want to control the growth (animate how far the array of mesh reaches along the path in the sequencer ) of the path and also the gaps between the meshes which are growing along the path.

Thanks in advance.

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2019-05-16_00-09-14