Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
the episode "a change in heart/pants" had a maximum of what number in the series?

### Inputs:
table_name: table, columns: ['Series #', 'Season #', 'Title', 'Written by', 'Original air date', 'U.S. Viewers (millions)']

### Response:
SELECT MAX Series # FROM table WHERE Title = "A Change in Heart/Pants"