diff --git a/src/interpreter.c b/src/interpreter.c
index e8def73..9b04845 100644
--- a/src/interpreter.c
+++ b/src/interpreter.c
@@ -380,6 +380,38 @@ GroundStruct parseStruct(GroundProgram* in, GroundScope* scope, size_t errorOffs
                 break;
             }
             case FUN: {
+                if (in->instructions[i].args.length < 1) {
+                    runtimeError(TOO_FEW_ARGS, "Expecting 1 or more args", &in->instructions[i], i);
+                }
+                if (in->instructions[i].args.args[0].type != FNREF) {
+                    runtimeError(ARG_TYPE_MISMATCH, "Expecting a FunctionRef for arg 1", &in->instructions[i], i);
+                }
+                char* name = malloc(strlen(in->instructions[i].args.args[0].value.refName) + 1);
+                strcpy(name, in->instructions[i].args.args[0].value.refName);
+
+                size_t counter = 1;
+                GroundProgram gp = createGroundProgram();
+                addInstructionToProgram(&gp, in->instructions[i]);
+                size_t errorOffset = i;
+                i++;
+                while (counter > 0) {
+                    if (i >= in->size) {
+                        runtimeError(PREMATURE_EOF, "Reached end of scope before function definition ended", &in->instructions[i - 1], i - 1);
+                    }
+                    if (in->instructions[i].type == FUN) {
+                        counter++;
+                    }
+                    if (in->instructions[i].type == ENDFUN) {
+                        counter--;
+                    }
+                    addInstructionToProgram(&gp, in->instructions[i]);
+                    i++;
+                }
+
+                GroundFunction* function = parseFunction(&gp, errorOffset);
+                function->startLine = i;
+                GroundValue gv = createFunctionGroundValue(function);
+                addFieldToStruct(&gstruct, name, gv);
                 break;
             }
             case ENDSTRUCT: {
@@ -412,8 +444,6 @@ GroundValue interpretGroundProgram(GroundProgram* in, GroundScope* inScope) {
             addLabel(scope.labels, in->instructions[i].args.args[0].value.refName, i);
         }
         if (in->instructions[i].type == FUN) {
-            GroundFunction* function = createGroundFunction();
-            function->startLine = i;
             if (in->instructions[i].args.length < 1) {
                 runtimeError(TOO_FEW_ARGS, "Expecting 1 or more args", &in->instructions[i], i);
             }
@@ -442,7 +472,9 @@ GroundValue interpretGroundProgram(GroundProgram* in, GroundScope* inScope) {
                 i++;
             }
 
-            GroundValue gv = createFunctionGroundValue(parseFunction(&gp, errorOffset));
+            GroundFunction* function = parseFunction(&gp, errorOffset);
+            function->startLine = i;
+            GroundValue gv = createFunctionGroundValue(function);
 
             addVariable(scope.variables, name, gv);
         }
@@ -502,6 +534,21 @@ GroundValue interpretGroundProgram(GroundProgram* in, GroundScope* inScope) {
                 }
             }
         }
+        if (in->instructions[i].type == STRUCT) {
+            int count = 1;
+            while (count > 0) {
+                i++;
+                if (i >= in->size) {
+                    return createNoneGroundValue();
+                }
+                if (in->instructions[i].type == STRUCT) {
+                    count++;
+                }
+                if (in->instructions[i].type == ENDSTRUCT) {
+                    count--;
+                }
+            }
+        }
         if (in->instructions[i].type == PAUSE || instructionsToPause == 0) {
             printf("Paused execution\n");
             printf("Previous instruction: ");
@@ -1873,7 +1920,9 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
                     break;
                 }
                 case FUNCTION: {
-                    gv = createFunctionGroundValue(createGroundFunction());
+                    GroundFunction* gf = createGroundFunction();
+                    gf->returnType = NONE;
+                    gv = createFunctionGroundValue(gf);
                     break;
                 }
                 case STRUCTVAL: {