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# Bummer! Better check your syntax

That would be the iOS Development with Objective-C (Objective-C Basics)

Review Scope and Loops

Create an int called mathTotal. Also, create a bool called 'isComplete'.

and

Create a for loop that will begin with a value of 5 and end with a value of 25. In each iteration, add the incrementing value to mathTotal. When the loop has finished running, set 'isComplete' to true. (HINT: the last value used INSIDE the loop should be 25)

```int mathTotal;
BOOL isComplete;

for (mathTotal = 5; mathTotal <= 25; mathTotal++) {

}

isComplete = TRUE;
```

OR I could do this

```int mathTotal;
BOOL isComplete;

for (mathTotal = 5; mathTotal <= 25; mathTotal++) {

if (mathTotal == 25) {

isComplete = TRUE;

}

else {

isComplete = FALSE;

}

}
```

I'm really confused right now about the loop subject.

the initialization always need to have an i ? like this:

``` int i = 5;
```

Why can't I use the mathTotal? instead I always have to use i?

so it would be like that:

```int mathTotal;
BOOL isComplete;

for ( int i = 5; i <= 25; i++) {

mathTotal += i;

}

isComplete = TRUE;
```

So confused! I review the videos already but still don't know why I can't use my integer called mathTotal.

if someone could help me understand this would be wonderful! Thank you very much for your time.