diff --git a/src/FESetL2BeamModule.jl b/src/FESetL2BeamModule.jl
index ae2a8b5..524c256 100644
--- a/src/FESetL2BeamModule.jl
+++ b/src/FESetL2BeamModule.jl
@@ -32,11 +32,12 @@ end
 
 Constructor.
 
-Supply the total number of elements in the set, and the cross-section definition.
+Supply the total number of elements in the set, and the cross-section
+definition. The parameters of the section are assumed to be uniform along the
+set of the beam elements.
 """
 function FESetL2Beam(N::IT, crosssection::CT) where {IT<:Integer, CT}
     par = crosssection.parameters(0.0)
-    N = size(conn, 1)
     _A = fill(par.A, N)
     _I1 = fill(par.I1, N)
     _I2 = fill(par.I2, N)
@@ -70,11 +71,12 @@ function cat(self::T,  other::T) where {T<:FESetL2Beam}
 end
 
 """
-    subset(self::T, L::FIntVec) where {T<:FESetL2Beam}
+    subset(self::T, L::IT) where {T<:FESetL2Beam, IT}
 
 Subset of a beam-element set.
 """
-function subset(self::T, L::FIntVec) where {T<:FESetL2Beam}
+function subset(self::T, L::IT) where {T<:FESetL2Beam, IT}
+    @info "Here"
     result = deepcopy(self)
     result.A = self.A[L]
     result.I1 = self.I1[L]
diff --git a/test/test_beam_mesh.jl b/test/test_beam_mesh.jl
index 73fee1c..4c4624b 100644
--- a/test/test_beam_mesh.jl
+++ b/test/test_beam_mesh.jl
@@ -1,4 +1,4 @@
-module m2
+module mframe1
 using FinEtools
 using FinEtoolsFlexStructures.FESetL2BeamModule: FESetL2Beam
 using FinEtoolsFlexStructures.CrossSectionModule: CrossSectionCircle
@@ -18,6 +18,59 @@ function test()
     @test count(fes) == 20
     true
 end
+test()
+end
+
+module mframe2
+using FinEtools
+using FinEtoolsFlexStructures.FESetL2BeamModule: FESetL2Beam
+using FinEtoolsFlexStructures.CrossSectionModule: CrossSectionCircle
+using FinEtoolsFlexStructures.MeshFrameMemberModule: frame_member
+using Test
+function test()
+    L = 42
+    xyz = [0 0 0;
+    0 L/4 L*1/4;
+    L/4 L/4 L*2/4;
+    L/4 0 L*3/4;
+    0 0 L]
+    nL = 20
+
+    cs = CrossSectionCircle(s -> 5.9910, s -> [0.0, 0.0, 1.0])
+    fens, fes = frame_member(xyz, nL, cs)
+    @test count(fes) == 20
+
+    cs = CrossSectionCircle(s -> 5.9910, s -> [0.0, 0.0, 1.0])
+    fens, fes = frame_member(xyz, nL, cs)
+    list = 1:2
+    fes = subset(fes, list)
+    accepttodelegate(fes, subset(fes.delegateof, list))
+    @test count(fes) == 2
+    @show fes
+    true
+end
+test()
+end
+
+module mframe3
+using FinEtools
+using FinEtoolsFlexStructures.FESetL2BeamModule: FESetL2Beam
+using FinEtoolsFlexStructures.CrossSectionModule: CrossSectionCircle
+using FinEtoolsFlexStructures.MeshFrameMemberModule: frame_member
+using Test
+function test()
+    L = 42
+    xyz = [0 0 0;
+    0 L/4 L*1/4;
+    L/4 L/4 L*2/4;
+    L/4 0 L*3/4;
+    0 0 L]
+    nL = 20
+
+    cs = CrossSectionCircle(s -> 5.9910, s -> [0.0, 0.0, 1.0])
+    fes = FESetL2Beam(nL, cs)
+    @show fes
+    true
+end
+test()
 end
-using .m2
-m2.test()