Carry Weight
Enable the built-in Carry Weight / Item Weight system.
This will assign a weight field to all items, and automaticaly track how much weight the player is carrying.

A player widget is added to the inventory Page, which automatically keeps track of how much the character is carrying.

The way this works in Rollplay is by assigning two Attributes to play the roles of "Current Carry weight" and "Total Carry Weight".
We recommend using a formula for "Total Carry Weight", and equipped items will have their weight automatically added to the "Current Carry Weight".