PROMS/Volian.Print.Library/vlnMacro.cs

@@ -22,7 +22,7 @@ namespace Volian.Print.Library
 			XOffset = xoffset;
 			MacroDef = macroDef;
 		}
-		public override float ToPdf(PdfContentByte cb, float yPageStart, float yTopMargin, float yBottomMargin)
+		public override float ToPdf(PdfContentByte cb, float yPageStart, ref float yTopMargin, ref float yBottomMargin)
 		{
 			cb.SaveState();
 			MyContentByte = cb;