Metaballs FX

Hi there! I’m trying to use physics spheres to drive the metaball position and I’m having a hard time with it. It seems to want a vector between -1 and 1, but I would like these metaballs to be anywhere in the scene, not just within a volume. Any ideas?

Is not possible to place metaballs anywhere because calculations is limited by specified volume. You can increase volume dimensions, but will hit performance and memory usage.