diff --git a/report.md b/report.md
index 9872337..63c7a93 100644
--- a/report.md
+++ b/report.md
@@ -32,7 +32,7 @@ BEGIN
 		getCellValue <- ERROR
 	endif
 
-	if (findMatrixElem( matrix , ColPos , RowPos ) == NULL)
+	if (findMatrixElem( matrix , ColPos , RowPos ) = NULL)
 		getCellValue <- false
 	endif
 
@@ -45,7 +45,7 @@ BEGIN
 	elem:*cellElement <- NULL
 
 	Row <- getElementPos(rows(matrix),RowPos)
-	if (Row == NULL)
+	if (Row = NULL)
 		findMatrixElem <- NULL
 	endif
 
@@ -63,7 +63,7 @@ END
 ```C
 setCellValue(matrix:Matrix, ColPos:integer, RowPos:integer,value:bool):bool
 BEGIN
-	if (value == true)
+	if (value = true)
 		setCellValue <- createMatrixElem(matrix,ColPos,RowPos)
 	else
 		if ( deleteMatrixElem(matrix,ColPos,RowPos) >= 0 )
@@ -93,7 +93,7 @@ createMatrixElem( matrix:Matrix, ColPos:integer, RowPos:integer):bool
 	Row <- getElementPos(rows(matrix),RowPos)
 	if (Row != NULL AND data(Row) != NULL)
 
-		if (colIndex(data(Row)) == ColPos)
+		if (colIndex(data(Row)) = ColPos)
 			error ++
 		else 
 			if (colIndex(data(Row)) > ColPos)
@@ -107,7 +107,7 @@ createMatrixElem( matrix:Matrix, ColPos:integer, RowPos:integer):bool
 				tmp <- nextCol(tmp)
 			endwhile
 
-			if ( nextCol(tmp) == NULL OR colIndex(nextCol(tmp)) > ColPos)
+			if ( nextCol(tmp) = NULL OR colIndex(nextCol(tmp)) > ColPos)
 				nextCol(elem) <- nextCol(tmp)
 				nextCol(tmp) <- elem
 			else 
@@ -123,7 +123,7 @@ createMatrixElem( matrix:Matrix, ColPos:integer, RowPos:integer):bool
 	Col <- getElementPos(cols(matrix),ColPos)
 	if (Col != NULL AND data(Col) != NULL)
 
-		if (rowIndex(data(Col)) == RowPos)
+		if (rowIndex(data(Col)) = RowPos)
 			error ++
 		else 
 			if (rowIndex(data(Col)) > RowPos)
@@ -136,7 +136,7 @@ createMatrixElem( matrix:Matrix, ColPos:integer, RowPos:integer):bool
 				tmp <- nextRow(tmp)
 			endwhile
 
-			if (nextRow(tmp) == NULL OR rowIndex(nextRow(tmp)) > RowPos)
+			if (nextRow(tmp) = NULL OR rowIndex(nextRow(tmp)) > RowPos)
 				nexRow(elem) <- nextRow(tmp)
 				newRow(tmp) <- elem
 			else 
@@ -168,21 +168,21 @@ BEGIN
 	Col  : *ListElement <- NULL
 
 	elem <- findMatrixElem(matrix,ColPos,RowPos)
-	if (elem == NULL)
+	if (elem = NULL)
 		deleteMatrixElem <- 0
 	endif
 
 	Row <- getElementPos(rows(matrix),RowPos)
-	if (Row == NULL)
+	if (Row = NULL)
 		deleteMatrixElem <- -1
 	endif
 
-	if (data(Row) == NULL)
+	if (data(Row) = NULL)
 		removeElementPos(rows(matrix),RowPos)
 		deleteMatrixElem <- -1
 	endif
 
-	if (colIndex(data(Row)) == ColPos)
+	if (colIndex(data(Row)) = ColPos)
 		data(Row) <- nextCol(elem)
 	else 
 		tmp <- data(Row)
@@ -197,21 +197,21 @@ BEGIN
 	
 	endif
 
-	if (data(Row) == NULL)
+	if (data(Row) = NULL)
 		removeElementPos(rows(matrix),RowPos)
 	endif
 
 
 	Col <- getElementPos(cols(matrix),ColPos)
-	if (Col == NULL)
+	if (Col = NULL)
 		deleteMatrixElem <- -2
 	endif
 
-	if (data(Col) == NULL)
+	if (data(Col) = NULL)
 		removeElementPos(cols(matrix),ColPos)
 		deleteMatrixElem <- -1
 	endif
-	if (rowIndex(data(Col)) == RowPos)
+	if (rowIndex(data(Col)) = RowPos)
 		data(Col) <- nextRow(elem)
 	else
 		tmp <- data(Col)
@@ -225,7 +225,7 @@ BEGIN
 
 	endif
 
-	if (data(Col) == NULL)
+	if (data(Col) = NULL)
 		removeElementPos(cols(matrix),ColPos)
 	endif