Warning while using Member Load UDL on the new STAAD Version

I am using Member loading ( UDL ) and getting warning in the analysis output, which for me seems like a software bug, can you please guide me.

Input

LOAD 20 WIND: WIND X

MEMBER LOAD

13 UNI Y 3.28 0 3.25 0

I have give f1,f2,f3 and f4 as the manual says.

Output

WARNING: IN UNIFORM MEMBER LOAD. ITEM "f3" NOT PROVIDED FOR MEMBER 13 CASE 20

"f3" ASSUMED TO BE MEMBER LENGTH = 4.34

Any help will be much appreciated.

SC