steamUGC.CreateItem always returns SteamAPIcall_t.Invalid.

[Yang8510]

I have set up the steam workshop backend based on the doc.

AppId_t appId = SteamUtils.GetAppID(); SteamAPICall_t steamAPICall = SteamUGC.CreateItem(appId, EWorkshopFileType.k_EWorkshopFileTypeCommunity); if (steamAPICall != SteamAPICall_t.Invalid) { var steamAPICallResult = CallResult<CreateItemResult_t>.Create(); steamAPICallResult.Set(steamAPICall, CreateWorkshopCommunityResult); }