umat isotropic hardening law

hello everybody

i want to ask when i use isotropic hardening law in umat abaqus. i used uhard subroutine.

my question can be so simple.

how we will enter plasticity values in abaqus. i think in user material after other constant we enter them like this

for exemple:

props(1) young

props(2) poisson ratio

props(3) strain value for the curve maybe 0

props(4) corresponding yield stress value

props(5) other strain value

......

.....

is this right???

thank`s in advance