E-Business Suite

Hi.

I have a servlet for integration with autovue. Servlet can receive parameters for MarkupEntity displaying. When I call writeMarkup() method of markupBean object, size of TextBox MarkupEntity object change, though I don't change its size. This effect is observed, when textBox is on raster image, but not on .dwg image.
In other words, this java code:

OutputStream os = new FileOutputStream(getMarkupFileName());
mbean.writeMarkup(os);
os.flush();
os.close();

leads to size changing of textBox entities.

Any ideas?