Do you have a question about the Playskool Gloworm and is the answer not in the manual?
Start by unzipping the Gloworm's pajamas to access the battery compartment.
Twist the battery pack 1/4 turn counterclockwise and pull it out completely to remove it.
Use a Phillips head screwdriver to remove the screw securing the battery pack. A 4mm screw is a suitable replacement.
Open the battery pack by separating its two halves, using a coin if needed to pry open the slot.
Insert two 'C' size batteries correctly into the bottom half. Use a PR-4 bulb or equivalent if replacement is needed.