After storing filtered pipeline output to a global variable (well, using context) I am having difficulty retrieving the value of a specific factor for a given security. I'm not sure if this sounds really stupid but I just can't figure it out. I have passed asset objects as the index in the form pipeline_output_variable[asset] and get errors, even though printing these assets results in the same format as printing the index of the stored output (which has not been converted into indices)