--- libgig/trunk/src/gig.cpp	2021/06/19 10:48:12	3958
+++ libgig/trunk/src/gig.cpp	2021/06/19 11:01:40	3961
@@ -5776,7 +5776,7 @@
      *
      * @param slot - script slot index of the variable to be retrieved
      */
-    std::map<String,String> Instrument::GetScriptPatchVariables(int slot) {
+    std::map<String,String> Instrument::GetScriptPatchVariables(size_t slot) {
         Script* script = GetScriptOfSlot(slot);
         if (!script) return std::map<String,String>();
         const _UUID uuid = _UUIDFromCArray(&script->Uuid[0]);
@@ -5808,7 +5808,7 @@
      * @param slot - script slot index of the variable to be retrieved
      * @param variable - name of the 'patch' variable in that script
      */
-    String Instrument::GetScriptPatchVariable(int slot, String variable) {
+    String Instrument::GetScriptPatchVariable(size_t slot, String variable) {
         std::map<String,String> vars = GetScriptPatchVariables(slot);
         return (vars.count(variable)) ? vars.find(variable)->second : "";
     }
@@ -5835,7 +5835,7 @@
      * @throws gig::Exception if given script @p slot index is invalid or given
      *         @p variable name is empty
      */
-    void Instrument::SetScriptPatchVariable(int slot, String variable, String value) {
+    void Instrument::SetScriptPatchVariable(size_t slot, String variable, String value) {
         if (variable.empty())
             throw Exception("Variable name must not be empty");
         Script* script = GetScriptOfSlot(slot);