Adding columns to Timestream table in the AWS web query editor

First...is it possible?

I am trying to add a column to a table called "MedFlaminator". I just created the table and it has the default layout. Two columns exist:

measure_name varchar MEASURE_NAME

time timestamp TIMESTAMP

My query looks like this:

alter table MedFlaminator add column feedback_score int

I have tried all kinds of combinations of this query. I am getting the following error:

10:58:16 AM Failed The query syntax is invalid at line 1:1 alter table MedFlaminator add column feedback_score int

What is wrong here?