String Function Action Json

Currently I am trying to test a playbook that takes in a hash as input, but I have multiple hashes coming in that are comma separated. I'm trying to use the split function within the string functions action, but when I try to go into my next action and select the first string from the split output, the string function json output is completely empty. In other words, when I run the playbook I can see that the split function is pulling all the hashes out and separating them, but when trying to select one of these hashes as input for a later action, the json is completely empty in the "Insert Placeholder" window. 

0 5 294