This function is part of the ProgressionSnapshot Interface.
Stores a Key/Value pair in memory for a given snapshot. If multiple calls happen with the same key, the last invocation wins, overwriting the previous value for that given key. The order in which the Key/Value pairs are added is stored as is for later retrieval/display. Ideally, you would make multiple calls to AddProgression() followed by a single call to SubmitSnapshot().
EOS_Success when successful; otherwise, EOS_NotFound
|Parameter Type And Name||Usage Information|
|const EOS_ProgressionSnapshot_AddProgressionOptions* Options|