I want to create diagonal struts in my frame.
I know, that in Seismostruct i can create infill panel with strut and shear curves.
But i need something else. I calculated by KAN.EPE width of strut, failure strain and failure deformations. I need the struts work only for compressive
without deducting buckling length and buckling failure.
After i created the material with properties i need.

Later i created a section of my strut (compression brace).

After in "Element Classes ->truss" i created truss element with material i created.

By "Element Connectivity" i created two struts and began the analysis.

But analysis can't run.

What i did wrong?
Please help me!
Thank you!!!