how to call outer variable

[zrwsmd]

i want to define a custom function block at my st program decl,this custom function block is not define at st file,but get this from another way like a json file

for var declaration at st program ,it seems easy to achieve by changing my langium rule,but if i want to call it inner vaiable lke below

i can not achieve it by override DefaultScopeProvider$getScope

[cdietrich]

please check out https://langium.org/docs/recipes/builtin-library/ #1491

[msujew]

Hey @zrwsmd,

we have had this question multiple times in the forum already. Please refer to #984 for a longer discussion on the topic and potential solutions.