Finding maximum and minimum positions by Extrema

Hi,

I have to detect the maximum and minimum positions of a structure over time. I have tried this with Extrema.

The result I got giving me the minimum as maximum and vice versa. I am attaching the results.

I just want the way opposite attached as X1.

I think there is a problem in the direction, I tried to changed that but its giving me some error.

How can I fix it?

Waiting for any kind reply.

Regards

Tayyaba

[Tayyaba Bano]

[Tayyaba Bano]

[Torsten]

Then use "-positions" instead of "positions".