Help needed with RSLogix 5000

[Pat McCarthy]

Hi! I'm hoping there is someone out in the CD community who has some experience using Structured Text with RSLogix 5000.
Using a variety of sources, I am unable to determine what I am doing wrong with the syntax of my code.

When I verify the code shown below, I receive the following errors:
Error: Line 2: Keyword "END_IF" expected
Error: Line 29: Unexpected end of text found

// If no rows have only 1 light...
if ((ROW1_Value <> 1) AND (ROW2_Value <> 1) AND (ROW3_Value <> 1)) then
	if (ROW2_Value > 0) then ROW2_Value := 1;							// Then check for the first row
	elsif (ROW1_Value > 0) then ROW1_Value := 1;						// to have greater than 0 and set it to 1
	else ROW3_Value := 1; end_if;

// Else if only one row has 1 light left...
elsif((ROW1_Value = 1) XOR (ROW2_Value = 1) XOR (ROW3_Value = 1)) then		// XOR to check for only 1 row having 1 light left.
	if((ROW1_Value = 1) AND (ROW2_Value >= 0) AND (ROW3_Value >= 0)) then		// First possibility
		if(ROW2_Value >= 2) then ROW2_Value := 0;
			else ROW3_Value := 0; end_if;

	elsif((ROW1_Value >= 0) AND (ROW2_Value = 1) AND (ROW3_Value >= 0)) then	// Second possibility
		if(ROW1_Value >= 2) then ROW1_Value := 0;
			else ROW3_Value := 0; end_if;

	elsif((ROW1_Value >= 0) AND (ROW2_Value >= 0) AND (ROW3_Value = 1)) then	// Third possibility
		if(ROW2_Value >= 2) then ROW2_Value := 0;
			else ROW3_Value := 0; end_if;

// Else if two rows have only 1 light left...
elsif( ((ROW1_Value = 1) AND (ROW2_Value = 1)) OR ((ROW1_Value = 1) AND (ROW3_Value = 1)) OR ((ROW2_Value = 1) AND (ROW3_Value = 1)) ) then
	if((ROW1_Value = 1) AND (ROW2_Value = 1)) then ROW1_Value := 0;
	elsif((ROW1_Value = 1) AND (ROW3_Value = 1)) then ROW3_Value := 0;
	else ROW2_Value := 0; end_if;

// Else if all three rows have 1 light left...
else ROW2_Value := 0;

end_if;

[Joe Ross]

You have 7 if's but only 6 end_if's.

[Pat McCarthy]

Originally Posted by Joe Ross

You have 7 if's but only 6 end_if's.

Thanks! That was it!