Want to add signature field in all Pages

BTW m using this code to place signature field in my pdf...

       $sendDoc->documentCreationInfo->formFields[$Fid]->locations[0]->height = 20;

       $sendDoc->documentCreationInfo->formFields[$Fid]->locations[0]->left = 70;

        $sendDoc->documentCreationInfo->formFields[$Fid]->locations[0]->pageNumber = 2;

        $sendDoc->documentCreationInfo->formFields[$Fid]->locations[0]->top =  165;

        $sendDoc->documentCreationInfo->formFields[$Fid]->locations[0]->width = 200;

        $sendDoc->documentCreationInfo->formFields[$Fid]->name = "SignatureOEPL".$Fid;

        $sendDoc->documentCreationInfo->formFields[$Fid]->inputType = 'SIGNATURE';

i know this is possible in webpage like right click on field and click on "Repeat Field on all pages" but how can i set it via api