Why is OPEN() cutting off this filename?

[Boaz Bezborodko]

Here is the code I am using:

147 ------- - - - - - - - - - - - - - - - -
◄ If: ◄
Then: af(15,*)="importerr-hsn.txt" ◄
148 ------- - - - - - - - - - - - - - - - -
◄ If: ◄
Then: ag=OPEN(af,"rwc0t") ◄

The resulting filename is coming out "importerr-hsn.t"

Can it only handle a filename up to 15 characters?

Boaz