--- /home/yonatyt/simu-git/simutrans-master/script/api/api_command.cc	2020-03-12 09:44:15.000000000 -0400
+++ /home/yonatyt/simu-git/files/api_command.cc	2020-03-23 23:37:14.997469000 -0400
@@ -197,7 +197,7 @@
 		tool->flags |= tool_t::WFL_NO_CHK;
 	}
 	// sanity check
-	if (player == NULL) {
+	if (player == NULL && v.tool != ::create_tool(TOOL_MARKER)) {
 		return sq_raise_error(vm, "Called tool with player == null");
 	}
 	uint8 flags = tool->flags; // might be reset by init()