**Describe the bug** A clear and concise description of what the bug is. **To Reproduce** Steps to reproduce the behavior: 1. Editing existing for loop to calculate the ending index 2. I added an open parenthesis to start the formula, tB immediately crashes 3. It will continue until that parenthesis is removed. 4. See the video https://1drv.ms/v/c/7b44a6c9bbfcba41/EbOOIFcLWdRFuuhtRWpacswBXJLWrHxOFnfByP_5oeKvKw?e=wE0Mv5 **Expected behavior** To be able to make this line: For liIndex = foundTags.Count To (liElements.length + foundTags.Count) - 1 **Desktop (please complete the following information):** - Windows 11 Pro 24H2 - twinBASIC 689 If I paste the complete formula there is no issue, it is just the IDE trying to figure out what is happening in real time. ;-)