Adding Multiple values to a dictionary

Help
1

Hi all,
Can anyone please explain how to add multiple values into a dictionary for one key.

2

The below is just a logic, not the exact syntax
Append the value to the same key using comma separation
Use split function to separate the values

Dict(“myKey”).value = Dict(“myKey”) + “,” + newValue

dim arr()
arr = spilt (Dict(“myKey”), “,”)