If you want to get the single field from another list by passing filter value then you don't need to use the "Call HTTP web servie" action.
You can get the value of field using "Set workflow variable" action.
Follow the Steps given below:
- Add "Set workflow varibale" action in your workflow.
- Click on value and then
fx
.
- Select Data Source to your another list.
- Select the field you want to retrieve from Field from source dropdown.
- When you select the data source to another list, it automatically adds on more block on the set workflow variable popup as Find the List Item.
- In this block, you can add you filter to retrieve the specific item from another list.
- Select the Field from dropdown on which you want to add the filter.
- Pass the the filter value in value section, either a hard coded string or you can pass varibales as well using
fx
.
Here is an example of how to set the workflow variable from another list.