diff --git a/docx/TSDocxRange.tsf b/docx/TSDocxRange.tsf
index 90e5d20..012aa1f 100644
--- a/docx/TSDocxRange.tsf
+++ b/docx/TSDocxRange.tsf
@@ -629,6 +629,7 @@ End;
 Function TSDocxRange.WriteBoldBi(value);
 Begin
 	range_font_.BoldBi := value;
+	range_font_.Apply();
 End;
 Function TSDocxRange.ReadBoldBi();
 Begin
@@ -637,6 +638,7 @@ End;
 Function TSDocxRange.WriteBold(value);
 Begin
 	range_font_.Bold := value;
+	range_font_.Apply();
 End;
 Function TSDocxRange.ReadBold();
 Begin
diff --git a/docx/font/TSDocxFont.tsf b/docx/font/TSDocxFont.tsf
index c7acd92..8ee0d55 100644
--- a/docx/font/TSDocxFont.tsf
+++ b/docx/font/TSDocxFont.tsf
@@ -210,7 +210,7 @@ End;
 
 Function TSDocxFont.WriteBoldBi(value);virtual;
 Begin
-	pr_.BoldBi := value = TSDocxEnumerations.wdToggle() ?  _Not(self.BoldBi) : value;
+	pr_.BCs := value = TSDocxEnumerations.wdToggle() ?  _Not(self.BoldBi) : value;
 End;
 Function TSDocxFont.ReadBoldBi();virtual;
 Begin