Is there any way of saving a variable to a json file that gets saved as a variable and opened as a usable variable later:

```
import json

variable = 123
test = {
    1 : 1*variable,
    2 : 2*variable,
    3 : 3*variable
}

with open('json_data_Test.json', 'w') as outfile:
    json.dump(test,outfile)

variable = 200

with open('json_data_Test.json', 'r') as outfile:
    test2 = json.load (outfile)

print(test2)

```

Output:
`{'1': 123, '2': 246, '3': 369}`

Desired Output:
`{'1': 200, '2': 400, '3': 600}`

The aim is to when the json file is reopened and brought into a dictionary, the values are changeable based on the new value of `variable`.