PCG, spline, blueprint

I’ve added a PCG and a closed spline called Plants1 to a blueprint. What I’m trying to figure out is how to get the meshes that are being spawned in the PCG to spawn within the interior of just the spline Plants1 inside the blueprint? The Range1 spline will be used for something else. Here’s some screen shots of the BP and a simple graph. I set the tags to match. I know I’m missing something. Please help