# Assign: Expression Activity type 'VisualBasicValue\`1' requires compilation

**URL:** <https://forum.uipath.com/t/assign-expression-activity-type-visualbasicvalue-1-requires-compilation/500591>\
**Category:** Studio\
**Tags:** output-panel, question, studio\
**Created:** [December 20, 2022, 4:48pm UTC](https://forum.uipath.com/t/assign-expression-activity-type-visualbasicvalue-1-requires-compilation/500591 "2022-12-20T16:48:13Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Anil\_G](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/anil_g/32/524291_2.png) [@Anil\_G](https://forum.uipath.com/u/Anil_G)\
**Post date:** [December 20, 2022, 5:20pm UTC](https://forum.uipath.com/t/assign-expression-activity-type-visualbasicvalue-1-requires-compilation/500591/2 "2022-12-20T17:20:03Z")

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@Baker9

Please try deleting that sequence and redo…

Check if there are any variables or arguments that you have and replace the inverted comma in the code

> [@Visual basic workflow compilation error](https://forum.uipath.com/t/visual-basic-workflow-compilation-error/480540/4):
>
> Hi, In windows legacy, it seems double quote is normalized and any double quote characer is accepted. However, at this time, in windows (.net6) ,in fact, only " (0x22) is accepted to express string literal. To make matter worse, it seems to occur only compiling. (Expression validator don’t raise an alert.) FYI, the following is sample for reproducing. The first Assign uses " 0x22 and second Assign uses “ and it fails in compiling. [Sample20221013-2.zip](https://forum.uipath.com/uploads/short-url/7jzdip8o8RZa4x0d5SG5D8NfDGC.zip) (2.1 KB) Regards,

Cheers

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