horizontal p members are not passing due to being slender

i have applied ly and lz parameter for the horizontal p member 1 to 6 (pmemb 1 to 6)

but somehow they are not passing im not sure why.

they are only restraint in global y direction.

can anyone help me 

and also tell if i am using the correct for designing .

i want to design it for australia

greenhouse COLD FORM CHECK.STD

these horizontal members are failing