is there any kind of flood fill option for the interior of the letters? If nothing else could you do a vector outline of the letters and cut the interiors that way?
Try using a different font for testing and see if it will do what you want then. There are some fonts that are just outlines and not filled letters, maybe you are using one of them?
Words of Wisdom:
“Words that sink into your ears are whispered…… not yelled”
“The biggest trouble maker you’ll probably ever have to deal with, watches you from the mirror every morn’n”
“The only difference between a rut and a grave is the depth”
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Just remember...when it's time for the hearse to pull up..there's no luggage rack on top!
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The beauty of the Second Amendment is that it will not be needed until they try to take it...Thomas Jefferson