diff --git a/crates/debugger_ui/src/session/running.rs b/crates/debugger_ui/src/session/running.rs
index 5c6d9e904d3057fba28584b7b2373163c97ea0f1..2a2bb942b4ad4b1f8901e41bbf05242091c3b9d3 100644
--- a/crates/debugger_ui/src/session/running.rs
+++ b/crates/debugger_ui/src/session/running.rs
@@ -927,6 +927,7 @@ impl RunningState {
                     .ok_or_else(|| anyhow!("{}: is not a valid adapter name", &adapter))
                     .map(|adapter| adapter.config_from_zed_format(zed_config))??;
                 config = scenario.config;
+                Self::substitute_variables_in_config(&mut config, &task_context);
             } else {
                 anyhow::bail!("No request or build provided");
             };