# Letters in braces

**URL:** <https://forum.xbench.net/t/letters-in-braces/1077>\
**Category:** Technical Support\
**Created:** [November 9, 2023, 10:38am UTC](https://forum.xbench.net/t/letters-in-braces/1077 "2023-11-09T10:38:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Anna\_Fitak](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.xbench.net/anna_fitak/32/477_2.png) [@Anna\_Fitak](https://forum.xbench.net/u/Anna_Fitak)\
**Post date:** [November 9, 2023, 10:38am UTC](https://forum.xbench.net/t/letters-in-braces/1077/1 "2023-11-09T10:38:06Z")

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Hello, I’ve gone through the existing bracket topics but either I’m an idiot or it doesn’t work the way it should (I opt for the first one here). I need to search all instances:  
Source: (A)  
Target: Lack od A  
The same applies for other letters. Without power search it ignores brackets. When I use “(A)” for source and -@1 for target, with power search, it doesn’t work. What am I doing wrong? Please, help.

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**Author:** ![omartin](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.xbench.net/omartin/32/82_2.png) [@omartin](https://forum.xbench.net/u/omartin)\
**Post date:** [November 10, 2023, 8:16am UTC](https://forum.xbench.net/t/letters-in-braces/1077/2 "2023-11-10T08:16:25Z")

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You must use the expression `"(A)=1"` in source. It assigns to variable 1 the resolved value of the expression in the currently parsed segment. The resolved value can be recalled with the expression **@1**. The search should be the following:

Source: `"(A)=1"`  
Target: `-@1`  
Search mode: Regular Expressions  
PowerSearch: On.  
Match Whole Word: On.  
Case-Sensitive: On (to find only uppercase A).

To search other letters in the same search such as B, C and D, the source would be `"([ABCD])=1"`.

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<div class="post-metadata">

**Author:** ![Anna\_Fitak](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.xbench.net/anna_fitak/32/477_2.png) [@Anna\_Fitak](https://forum.xbench.net/u/Anna_Fitak)\
**Post date:** [November 10, 2023, 8:28am UTC](https://forum.xbench.net/t/letters-in-braces/1077/3 "2023-11-10T08:28:35Z")

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Thank you so much! It works perfectly.