Dear Mr. sye,
As you said i changed the support, and removed both taper 0 all & main 0 all. But still the member ratio is not changing. Even though im agree that the structure is not safe and failing in slenderness. why the ratio is not changing with vary in load accordingly. I attached the file plz edit and do necessary correction. (Please visit the site to view this file)
And plz screenshot the high x displacement of 358mm. Thanking you.