Hi @Davood , the json can be created using Column to JSON:
create a column of the required name, e.g. “test”
and then the Columns to JSON node will convert that column to the required JSON
If you are then using a node such as “POST Request” you can use that column directly (e.g. if you have multiple post requests with a table of data)
Or alternatively, if you are doing a single call and want to specify it using a flow variable, you’d convert it back to a variable with Table Row to Variable and then define the body as a constant, supplied by the flow variable:
create json from variables.knwf (15.8 KB)