Regarding the syntax issues of C # modules

[Joedian]

Why do my C # action blocks have syntax errors, such as' using System 'in the first line; This line of code will prompt '('expected', does this obviously not have any syntax errors? I have made additional instructions and references

 

[VladZen]

Why do my C # action blocks have syntax errors, such as' using System 'in the first line; This line of code will prompt '('expected', does this obviously not have any syntax errors? I have made additional instructions and references

There is syntax in one of C# cubes in the project.
You should correct it.