Cannot predict for more steps than number of observations

[SupplyChef]

When trying to sample future scenarios from a BasicStructuralExplanatory model, I get the error shown below. I believe this is because the sampling code reuses the arrays (ie, Z) that were sized with the number of observations used to fit the model. This fails when the number of steps to sample for is greater than the number of observations.

BoundsError: attempt to access 9-element Vector{Vector{Float64}} at index [10]
│ Stacktrace:
│ [1] getindex(A::Vector{Vector{Float64}}, i1::Int64)
│ @ Base .\essentials.jl:13
│ [2] simulate(model::StateSpaceModels.BasicStructuralExplanatory, initial_state::Vector{Float64}, n::Int64, new_exogenous::Matrix{Float64}; return_simulated_states::Bool)
│ @ StateSpaceModels C:\Users\renau.julia\packages\StateSpaceModels\DmxMT\src\models\basicstructural_explanatory.jl:209
│ [3] simulate
│ @ C:\Users\renau.julia\packages\StateSpaceModels\DmxMT\src\models\basicstructural_explanatory.jl:182 [inlined]
│ [4] simulate_scenarios(model::StateSpaceModels.BasicStructuralExplanatory, steps_ahead::Int64, n_scenarios::Int64, new_exogenous::Array{Float64, 3}; filter::StateSpaceModels.UnivariateKalmanFilter{Float64})
│ @ StateSpaceModels C:\Users\renau.julia\packages\StateSpaceModels\DmxMT\src\models\basicstructural_explanatory.jl:177
│ [5] simulate_scenarios(model::StateSpaceModels.BasicStructuralExplanatory, steps_ahead::Int64, n_scenarios::Int64, new_exogenous::Array{Float64, 3})
│ @ StateSpaceModels C:\Users\renau.julia\packages\StateSpaceModels\DmxMT\src\models\basicstructural_explanatory.jl:161
│ [6] sample_structural_explanatory(dates::Vector{Dates.Date}, values::Vector{Float64}, seasonality::Int64, event_dates::Vector{Dates.Date}, events::Vector{String}, horizon::Int64; scenario_count::Int64)