passing arguments to subset from a function

Hello R-helpers,

I'm writing a long function in which I manipulate a certain number of
datasets. I want the arguments of said function to allow me to adapt the
way I do this. Among other things, I want my function to have an argument
which I will pass on to subset() somewhere inside my function. Here is a
quick and simplified example with the iris dataset.

myfunction<-function(table, extraction)  {
     table2<-subset(table, extraction)
return(table2) }

myfunction(iris, extraction= Species=="setosa")


############## end

What I would like is for this function to return exactly the same thing

:
subset(iris, Species=="setosa")


Thanks for your help.

Regards,

David Gouache