Variable value is not updated after "catch function script"

Hello,

I tried do it same way. Problem is using variable "InternalError" (in my example "Chyba") out of catch function script (see attachment).

What does it mean "await" before HMIRuntime.FileSystem ? If I write it before HMI.. it looks like syntax error. 

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Split from [MTP700] How to test existence of a file in JS ?.

Solved, maybe it could help somebody. Solution is "await" what I asked too. It provide continuing script after finishing catch script. "await" is possible use only in async functions. In  synchronous functions it looks lie syntax error.

Hello Speter131031,

thank you for providing your solution to the community!

Kind regards, Moderator_Lan