Problem with a global variable

From: Thomas Jones

I have several user-defined functions. As is standard practice, I am
defining a logical vector named idebug in order to control debugging
printouts. For example, if idebug [1] has the value TRUE, such-and-such
debugging printouts are enabled. After the function works, some or all of
the debugging printouts can be inhibited. idebug is a global variable;
otherwise, it would have to be moved around with function arguments in a way
which is clunky and hard to get right. However, I am getting an error
message. This message was emitted during the loading of the program and is
NOT inside any function.

Or perhaps idebug wants a special slot on the search path.

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debug_l <- 5 # length of debug vector
idebug <<- logical (5)
idebug [1] <<- TRUE

Error in idebug[1] <<- TRUE : object "idebug" not found

[snip]
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Your advice?

Tom Jones