> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.ninjatrader.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.ninjatrader.com/_mcp/server.

# CS1525

The following **CS1525** error code information is provided within the context of **NinjaScript**. The examples provided are only a subset of potential problems that this error code may reflect. In any case, the examples below provide a reference of coding flaw possibilities.

## Error Code Explanation

The compiler detected an invalid character in an expression.

## Error Description #1

\{ expected

### Erroneous Sample Code - If statement is not opened

```csharp
protected override void OnBarUpdate()  
{  
   if(IsFirstTickOfBar)        
}
```

### Resolution Sample Code - If statement is open and closed

```csharp
protected override void OnBarUpdate()  
{  
   if (IsFirstTickOfBar)  
   {  
     // do something  
   }  
}
```