diff --git a/src/js/wombJS.tw b/src/js/wombJS.tw
index d7462fba74958bfe1f10ad2b906ab590c8b7c2ba..2a56117a4fb4c5f0ea466e9be338767eded43e72 100644
--- a/src/js/wombJS.tw
+++ b/src/js/wombJS.tw
@@ -205,7 +205,7 @@ window.WombGetVolume = function(actor) { //most legacy code from pregJS.tw with
     function getCurData(actor, age)
     {
         let i = 0;
-        let min, max, ageMin, ageMax, ctrMin, ctrMax, one, ctrOne, ctr, cage, csize;
+        let min, max, ageMin, ageMax, rateMin, rateMax, one, rateOne, rate, cage, csize;
         let data = {};
 
         while (actor.pregData.fetusWeek[i+1] < age && i < actor.pregData.fetusWeek.length-1)
@@ -215,23 +215,23 @@ window.WombGetVolume = function(actor) { //most legacy code from pregJS.tw with
         max = actor.pregData.fetusSize[i+1];
         ageMin = actor.pregData.fetusWeek[i];
         ageMax = actor.pregData.fetusWeek[i+1];
-        ctrMin = actor.pregData.fetusRate[i];
-        ctrMax = actor.pregData.fetusRate[i+1];
+        rateMin = actor.pregData.fetusRate[i];
+        rateMax = actor.pregData.fetusRate[i+1];
 
         cage = age - ageMin;
 
         one = (max - min) / (ageMax - ageMin);
-        ctrOne = (ctrMax - ctrMin) / (ageMax - ageMin);
+        rateOne = (rateMax - rateMin) / (ageMax - ageMin);
        
-        ctr = ctrMin + (ctrOne * cage);
+        rate = rateMin + (rateOne * cage);
 
         csize = (min + (one * cage));
-        console.log("min:"+min+"  max:"+max+"  ageMin:"+ageMin+"  ageMax:"+ageMax+"  one:"+one+"  ctrOne:"+ctrOne+"  cage:"+cage+"  ctr:"+ctr+"  csize:"+csize+"  final size:"+csize*ctr);
+        console.log("min:"+min+"  max:"+max+"  ageMin:"+ageMin+"  ageMax:"+ageMax+"  one:"+one+"  rateOne:"+rateOne+"  cage:"+cage+"  rate:"+rate+"  csize:"+csize+"  final size:"+csize*rate);
 
         data.size = csize;
-        data.rate = ctr;
+        data.rate = rate;
 
-        return data; //csize * ctr; 
+        return data; //csize * rate; 
         //maybe not very effective code, but simple and easy to debug. May be optimized more in future.
     }