[R] stepAIC on lm() where response is a matrix..

[vinod gullu]

dear R users,

I have fit the lm() on a mtrix of responses. 
i.e M1 = lm(cbind(R1,R2)~ X+Y+0). When i use
summary(M1), it shows details for R1 and R2
separately. Now i want to use stepAIC on these models.
But when i use stepAIC(M1) an error message  comes
saying that dropterm.mlm is not implemented. What is
the way out to use stepAIC in such cases.

regards,


 
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