How to add spring to a weighted link?

Hello,

I would like to simulate a shaft, with two bearings.

I have the shaft model with two datum points on the axis of the shaft where the bearings are. And there are another two points below the first points.

I created the weighted links using the bearing surface of the shaft and the datum point on the shaft axis.

I fixed the points below and I would like to connect them to the points on the shaft axis.

When I start to Run the Analysis I get the following error message:
Spring idealization has properties not Supported for Ansys.

Could You help me, what the problem is?

Thanks,
Zsolt