Fix for AMC 1.5 formula default vars

src/macros.tex

@@ -13,7 +13,17 @@
 \newcommand{\myscoringopen}[1]{%
     \setlength{\parskip}{.8\baselineskip}%
     \textit{(#1 \ifdim #1pt < 1.01pt point\else points\fi)}
-    \scoring{MAX=#1,formula= (P1+P2+P3+P4+P5+P6+P7) > #1 ? #1 : (P1+P2+P3+P4+P5+P6+P7)}
+    \scoring{
+        MAX=#1,
+        default.P1=0,
+        default.P2=0,
+        default.P3=0,
+        default.P4=0,
+        default.P5=0,
+        default.P6=0,
+        default.P7=0,
+        formula= (P1+P2+P3+P4+P5+P6+P7) > #1 ? #1 : (P1+P2+P3+P4+P5+P6+P7)
+    }
 }
 
 
@@ -27,7 +37,7 @@
         \correctchoice{\scriptsize $2$}\scoring{set.P5=2}
         \correctchoice{\scriptsize $3$}\scoring{set.P6=3}
         \correctchoice{\scriptsize $4$}\scoring{set.P7=4}
-}}
+    }}
 \newcommand{\myanswerbox}[1]{\internalmyanswerbox{#1}{true}}
 \newcommand{\myanswerboxnodots}[1]{\internalmyanswerbox{#1}{false}}