THROW2(arg_error,0,"Error while converting %s: this does not seem to be a valid number (problem at '%s')",string,p);
gras_msg_rpcreturn(60,ctx,&result);
THROW2(arg_error,0,"Error while converting %s: this does not seem to be a valid number (problem at '%s')",string,p);
gras_msg_rpcreturn(60,ctx,&result);