This is how you can use Ad Params when setting up your Ad
When building your campaign, check the box of Use ad params:
The value that can be defined as an ad param must be numerical or a combination of number and currency. Using ad params means that they will dynamically update in the ad, without creating a new one.
The correct format of ad params is {param1: }.
For example, we wish to use Price as ad param. Place it in the following way, with curly brackets:
When including the Ad Param in the Ad itself, insert it in the following way of {param1: }:
NOTE: The wrong way of using ad params would be to include the {Price} as ad param and also as a dynamic value in your ad, such as:
FYI: If you want to use params for Microsoft bing, you should write it this way>
{param1}, and not as described above > {param1: }.
To learn more about ad params: https://developers.google.com/adwords/scripts/docs/features/ad-params
Ad param formats: https://developers.google.com/adwords/api/docs/reference/v201809/AdParamService.AdParam