Possible to update state within a toast.promise loading message?

[CodyCodes95]

Hello! I am using toast.promise to run a long request which processes a bunch of records. Example:

   await toast.promise(
                    generateAllGeocodeData(missingData),
                    {
                      loading: `Processed ${processedCount} of ${missingData.TotalCount}`,
                      success: "Data generated",
                      error: "Error generating data",
                    }
                  );

processedCount is state which is being updated within the generateAllGeocodeData function on each loop. However, for the entirety of the promise, the message just reads "Processed 0 of (whatever the count is)"

How can I have the state in the loading message update?