diff --git a/basic/B2/B2aVis.jl b/basic/B2/B2aVis.jl
index 8457f5a..33957a2 100644
--- a/basic/B2/B2aVis.jl
+++ b/basic/B2/B2aVis.jl
@@ -1,31 +1,35 @@
+import Pkg
+Pkg.activate(joinpath(@__DIR__, "..", ".."))
+Pkg.instantiate()
+
 using Geant4
 using Geant4.SystemOfUnits
 using GLMakie  # to force loading G4Vis extension
 
 include(joinpath(@__DIR__, "B2aDetector.jl"))
 
-particlegun = G4JLGunGenerator(particle = "proton",
-                               energy = 3GeV,
-                               direction = G4ThreeVector(0,0,1),
-                               position = G4ThreeVector(0,0,-2940.0));
+particlegun = G4JLGunGenerator(particle="proton",
+    energy=3GeV,
+    direction=G4ThreeVector(0, 0, 1),
+    position=G4ThreeVector(0, 0, -2940.0));
 
 evtdisplay = G4JLEventDisplay(joinpath(@__DIR__, "B2aVisSettings.jl"));
 
-app = G4JLApplication(;detector = B2aDetector(nChambers=5),          ## detector with parameters
-                       generator = particlegun,                      ## primary particle generator
-                       physics_type = FTFP_BERT,                     ## what physics list to instantiate
-                       evtdisplay =  evtdisplay,                     ## detector and event visualization
-                      );
+app = G4JLApplication(; detector=B2aDetector(nChambers=5),          ## detector with parameters
+    generator=particlegun,                      ## primary particle generator
+    physics_type=FTFP_BERT,                     ## what physics list to instantiate
+    evtdisplay=evtdisplay,                     ## detector and event visualization
+);
 # wait_for_key(prompt) = (print(stdout, prompt); read(stdin, 1); nothing)
 
 configure(app)
 initialize(app)
 
-beamOn(app,0)  ## Needed to really initialize
+beamOn(app, 0)  ## Needed to really initialize
 display(evtdisplay.figure)
 
-beamOn(app,1)
+beamOn(app, 1)
 display(evtdisplay.figure)
 
-beamOn(app,1)
+beamOn(app, 1)
 display(evtdisplay.figure)