Specifying Concrete Material Strength Error

I am attempting to specify a material (concrete) with a specific strength in STAAD Pro V8i.

My input is as follows:
DEFINE MATERIAL START
ISOTROPIC LONG
E 3.2e+007
POISSON 0.17
DENSITY 24.5
ALPHA 1e-005
DAMP 0.05
G 1e+015
TYPE CONCRETE
STRENGTH RY 1 RT 1 FCU 30000
END DEFINE MATERIAL

And the error message I receive is: Error, Material data command is not complete. Data missing, command ignored.
Citing the line with "STRENGTH RY 1 RY 1 FCU 30000" as the line with error.

What am I missing or doing wrong?