diff --git a/test/single_scale/LAMMPS/test_aluminum_core_template/check.py b/test/single_scale/LAMMPS/test_aluminum_core_template/check.py
new file mode 100644
index 0000000..12b41a4
--- /dev/null
+++ b/test/single_scale/LAMMPS/test_aluminum_core_template/check.py
@@ -0,0 +1,10 @@
+
+
+def compute(core=None, **kwargs):
+    print(core.keys())
+    # for a in core['displacements']:
+    #     print(a)
+    for a in core['corrections']:
+        print(a)
+
+    return core['displacements']
diff --git a/test/single_scale/LAMMPS/test_aluminum_core_template/test_aluminum_core_template.config b/test/single_scale/LAMMPS/test_aluminum_core_template/test_aluminum_core_template.config
index 2165885..05e7739 100644
--- a/test/single_scale/LAMMPS/test_aluminum_core_template/test_aluminum_core_template.config
+++ b/test/single_scale/LAMMPS/test_aluminum_core_template/test_aluminum_core_template.config
@@ -1,49 +1,50 @@
 Section MultiScale MetalUnits
 DIMENSION 3
 UNITCODE MetalUnits 
 
 LET A = 4.04525975883
 LET BX = sqrt(2)
 LET BY = sqrt(3)
 LET BZ = sqrt(6)
 LET AX = BX*A
 LET AY = BY*A
 LET AZ = BZ*A
 
 LET WIDTH = 2
 LET HEIGHT = 5
 LET THICKNESS = 1
 LET MDSIZE = 8
 LET AWIDTH = WIDTH*AX
 LET AHEIGHT = HEIGHT*AY
 LET ATHICKNESS = THICKNESS*AZ
 LET mass = 26.9815400000000
 
 ## geometry
 GEOMETRY full CUBE BBOX -1000 1000 -1000 1000 -1000 1000
 
 ################################################################################
 ## model declarations
 MD_CODE LAMMPS md
 
 
 COMPUTE seg_nodes PYTHON FILENAME generate_nodes
 FILTER nodes POINTSET INPUT seg_nodes
 COMPUTE conn PYTHON INPUT seg_nodes FILENAME generate_conn
 COMPUTE burgers PYTHON INPUT conn FILENAME generate_burgers
 COMPUTE normals PYTHON INPUT conn FILENAME generate_normals
 FILTER segs DDMESH INPUT nodes=nodes INPUT connectivity=conn INPUT burgers=burgers INPUT normals=normals
 
 FILTER core CADD_TEMPLATE INPUT points=md INPUT segments=segs FILENAME lm_core_correction_template_angle_90_radius_10.npz
-STIMULATION core_stim FIELD INPUT dofs=md INPUT field=core FIELD displacement
+COMPUTE check PYTHON INPUT core FILENAME check
+STIMULATION core_stim FIELD INPUT dofs=md INPUT field=check FIELD displacement
 DUMPER points PARAVIEW INPUT md DISP
 # DUMPER core TEXT INPUT core
 endSection
 
 ################################################################################
 #Lammps section
 Section LAMMPS:md MetalUnits
 TIMESTEP 1e-3
 LAMMPS_FILE lammps.conf
 DOMAIN_GEOMETRY full
 endSection