Hi @Janelle_Tan ,
The Complete requirement is not explained, However, we assume that you would want to store the Qty9, Qty10, Qty11,… variable values into an Array/Collection type. For this, you would need to change the Datatype of Quantities variable to Array Of String.
Next, for Initialising the Quantities array variable with the individual variable values, you would need to use an Assign Activity and initialise the Quantities variable.
Something in the below manner :
Quantities = {Qty1,Qty2,Qty3,Qty4}
We cannot use/assign variables to other variables in the Default value of variables Panel.