Help with a Flow

So I am trying to build my first Flow and need some help. I’m trying to call an API based on the response from another API.

Here’s the process:
Call 1st API
Read response and if the status say success, call the 2nd API.

The only way I can get it to work is to insert a delay after calling the 1st API. It works, but not ideal because the response may at times take longer than my delay I have set…

Here is what I have so far:

<script is="dmx-flow" id="flow2" type="text/dmx-flow">[
  {
    run: {action: "{{api1.load()}}"}
  },
  {
    wait: {delay: 5000}
  },
  {
    condition: {
      if: "{{api1.data.status.contains(\"success\")}}",
      then: {
        steps: {
         run: {action: "{{api2.load()}}"}
        }
      },
      else: {
        steps: {
          bootbox.alert: {message: "failure"}
        }
      }
    }
  }
]</script>

How can I make the second call trigger conditionally on the first call, or am I going about this the wrong way?

Thanks,
Chris