Below is something I learned about using webform data in Rules, which may help you to get this to work ... (assuming this question is about D7).
You have access to all labels and all values of any field of a webform, ie:
[data:MachineFieldName-title] contains the Label of a field with machine name MachineFieldName.
[data:MachineFieldName-value] contains the Value of a field with machine name MachineFieldName
So try to use similar tokens.
For way more details on this, and a prototype rule about this, refer to the answer to "How to create a node from a Webform using rules?":
- the 1st attempt relates to using "Entity has field" (which doesn't work for Webform).
- the 2nd attempt explains what to do in case of Webform.
Note: if your target field is a multi value field, using "Set a data value" is completely wrong. Instead you need to use an action like "Add item to a list". Refer to my answer to "How to set multiple values to an unlimited Term Refence field with Rules" for way more details about "Add item to a list".