creating a sequence of object names

Hello R-users,

I wanted to generate objects named 'my.ftn1',
'my.ftn2', ... , 'my.ftn10', and tried the following
code without success. How can I do this?

for ( i in 1:10 ) {

+ sub(" ", "", paste("my.ftn", i)) <- NULL
+ }
Error: Target of assignment expands to non-language
object

Many thanks.

John