PDFLIB rect() load_font not allowed in path scope

Denne snip af min kode starter et nyt dokument,laver en firkant og skal så lave resten, men der kommer en fejl ved load font.


if (PDF_begin_document($this->p, "", "") == 0) {
die("Error: " . PDF_get_errmsg($this->p));
}

PDF_set_parameter($this->p, "hypertextencoding", "winansi");

$pagewidth = 420;
$pageheight = 595;
$fontsize = 12;

PDF_begin_page_ext($this->p, $pageheight, $pagewidth, "topdown");

PDF_rect($this->p, 0,0,4000,4000);
PDF_closepath($this->p);

$font = PDF_load_font($this->p, "Helvetica-Bold", "winansi", "");





FEJL: Fatal error: pdf_load_font(): [2100] PDF_load_font: Function must not be called in 'path' scope