Hi Owen,
You have to create the same variable name "movaway" and please check whether you have given correct variable name.
In the task,starnames is a 7*1 string and speed is the corresponding speed for the stars which is an integer array.
From the question ,we should give output elements in starnames whose speed is greater than zero and should store the output in movaway variable.
So we can write code in the following way
movaway=starnames(speed>0)
Hope it helps.
