The output from a R component looks like this

FItSummary

"y ~ a * x^b

Formula: y ~ a * x^b

Parameters:

    Estimate Std. Error t value Pr(>|t|)   

a  1.732e+03  1.898e+01   91.26   <2e-16 ***

b -1.829e-01  3.035e-03  -60.27   <2e-16 ***

---

Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 45.32 on 839 degrees of freedom

Number of iterations to convergence: 14

Achieved convergence tolerance: 1.622e-07

What is the rsplit syntax for pulling out a and b and make them separate properties in pilot script ?