diff --git a/core/src/callback.jl b/core/src/callback.jl
index 09dc5edc6..f9dbd438a 100644
--- a/core/src/callback.jl
+++ b/core/src/callback.jl
@@ -151,6 +151,7 @@ end
 function apply_discrete_control!(u, t, integrator)::Nothing
     (; p) = integrator
     (; discrete_control) = p
+    condition_idx = 0
 
     discrete_control_condition!(u, t, integrator)
 
diff --git a/core/src/util.jl b/core/src/util.jl
index 1c48e8518..f8ebeabe3 100644
--- a/core/src/util.jl
+++ b/core/src/util.jl
@@ -709,3 +709,19 @@ function get_influx(basin::Basin, basin_idx::Int)::Float64
     return precipitation[basin_idx] - evaporation[basin_idx] + drainage[basin_idx] -
            infiltration[basin_idx]
 end
+
+function get_discrete_control_indices(discrete_control::DiscreteControl, condition_idx::Int)
+    (; greater_than) = discrete_control
+    condition_idx_now = 1
+
+    for (compound_variable_idx, vec) in enumerate(greater_than)
+        l = length(vec)
+
+        if condition_idx_now + l > condition_idx
+            greater_than_idx = condition_idx - condition_idx_now + 1
+            return compound_variable_idx, greater_than_idx
+        end
+
+        condition_idx_now += l
+    end
+end
diff --git a/core/src/validation.jl b/core/src/validation.jl
index 821375e0c..dc39244fc 100644
--- a/core/src/validation.jl
+++ b/core/src/validation.jl
@@ -573,8 +573,6 @@ function valid_discrete_control(p::Parameters, config::Config)::Bool
         for (Δt, var, node_id) in zip(look_aheads, variables, listen_node_ids)
             if !iszero(Δt)
                 node_type = node_id.type
-                # TODO: If more transient listen variables must be supported, this validation must be more specific
-                # (e.g. for some node some variables are transient, some not).
                 if node_type ∉ [NodeType.FlowBoundary, NodeType.LevelBoundary]
                     errors = true
                     @error "Look ahead supplied for non-timeseries listen variable '$var' from listen node $node_id."
diff --git a/docs/core/usage.qmd b/docs/core/usage.qmd
index a736c41cd..88374f8ef 100644
--- a/docs/core/usage.qmd
+++ b/docs/core/usage.qmd
@@ -639,7 +639,7 @@ which can be for instance an average or a difference of variables. If a variable
 column               | type     | unit    | restriction
 -------------------- | -------- | ------- | -----------
 node_id              | Int32    | -       | sorted
-compound_variable_id | String   | -       | sorted per node_id
+compound_variable_id | Int32    | -       | sorted per node_id
 listen_node_type     | String   | -       | known node type
 listen_node_id       | Int32    | -       | sorted per node_id
 variable             | String   | -       | must be "level" or "flow_rate", sorted per listen_node_id
@@ -648,7 +648,7 @@ look_ahead           | Float64  | $s$     | Only on transient boundary condition
 
 ## DiscreteControl / condition
 
-The condition schema defines conditions of the form 'the `discrete_control` node with this `node_id`listens to whether the variable given by the `node_id` and `compound_variable_id` is greater than `greater_than`'. If the condition variable comes from a time-series, a look ahead $\Delta t$ can be supplied. Multiple conditions with different `greater_than` values can be defined on the same compound_variable.
+The condition schema defines conditions of the form 'the `discrete_control` node with this `node_id`listens to whether the variable given by the `node_id` and `compound_variable_id` is greater than `greater_than`'. Multiple conditions with different `greater_than` values can be defined on the same compound_variable.
 
 column               | type     | unit    | restriction
 -------------------- | -------- | ------- | -----------