Error in size_symbol functionality

I am evaluating CrossStudio for ARM v3.5 with Kinetis FRDM-K64F board, trying to port a Processor Expert Software project. It is necessary to change some the predefined linker constants names used in the flash_placement.xml, and looking the documentation I have found that the size_symbol property of a ProgramSection doesn't work.

If I use the next XML entry in the flash_placement.xml:

<ProgramSection alignment="4" load="Yes" name=".text" address_symbol="__MY_TEXT_START" size_symbol="__MY_TEXT_SIZE" />

The symbol __MY_TEXT_START appears inside the generated linker file, but the symbol __MY_TEXT_SIZE is not there.

Have anyone noticed this?