diff --git a/src/module/rolls/ds4roll.ts b/src/module/rolls/ds4roll.ts
index 162b6667..2d588b74 100644
--- a/src/module/rolls/ds4roll.ts
+++ b/src/module/rolls/ds4roll.ts
@@ -12,16 +12,25 @@ export class DS4Roll extends DiceTerm {
     constructor(termData: Partial<TermData>) {
         super({
             number: 1,
-            faces: termData.number ?? -1,
+            faces: termData.faces,
             modifiers: termData.modifiers ?? [],
             options: termData.options ?? {},
         });
         console.log("This @ constructor: ", termData);
+
+        const targetValueModifier = this.modifiers.filter((m) => m[0] === "v")[0] ?? "v" + DS4Roll.DEFAULT_TARGET_VALUE;
+        const rgx = new RegExp("v([0-9]+)?");
+        const match = targetValueModifier.match(rgx);
+        if (match) {
+            const [parseTargetValue] = match.slice(1);
+            this.targetValue = parseTargetValue ? parseInt(parseTargetValue) : DS4Roll.DEFAULT_TARGET_VALUE;
+        }
     }
 
     success = null;
     failure = null;
     number = 1;
+    targetValue = DS4Roll.DEFAULT_TARGET_VALUE;
 
     /**
      * @override
@@ -30,7 +39,7 @@ export class DS4Roll extends DiceTerm {
      * @private_notes This gets only called once for the first roll.
      */
     roll({ minimize = false, maximize = false } = {}): RollResult {
-        console.log(`This faces @ roll: ${this.faces}`);
+        console.log(`This targetValue @ roll: ${this.targetValue}`);
         const rollResult = this.rollWithDifferentBorders(1, 20, { minimize, maximize });
         this.results.push(rollResult);
         if (rollResult.status == RollResultStatus.CRITICAL_SUCCESS) {
@@ -46,17 +55,14 @@ export class DS4Roll extends DiceTerm {
         minCritFail: number,
         { minimize = false, maximize = false } = {},
     ): RollResult {
+        const targetValueToUse = this.targetValue;
         if (minimize) {
             return new RollResult(0, RollResultStatus.CRITICAL_FAILURE, [20], true);
         } else if (maximize) {
-            return new RollResult(
-                this.faces,
-                RollResultStatus.CRITICAL_SUCCESS,
-                Array(Math.ceil(this.faces / 20)).fill(1),
-                true,
-            );
+            const numberOfDice = Array(Math.ceil(targetValueToUse / 20)).fill(1);
+            return new RollResult(targetValueToUse, RollResultStatus.CRITICAL_SUCCESS, numberOfDice, true);
         } else {
-            return ds4roll(this.faces, { maxCritSucc: maxCritSuccess, minCritFail: minCritFail });
+            return ds4roll(targetValueToUse, { maxCritSucc: maxCritSuccess, minCritFail: minCritFail });
         }
     }
 
@@ -72,15 +78,11 @@ export class DS4Roll extends DiceTerm {
             }, []);
     }
 
-    get expression(): string {
-        return `${this.faces}ds${this.modifiers.join("")}`;
-    }
-
-    get formula(): string {
-        return this.expression;
-    }
-
     /** Term Modifiers */
+    noop(): this {
+        return this;
+    }
+
     crits(modifier: string): this {
         const rgx = new RegExp("c([0-9]+)?,([0-9]+)?");
         const match = modifier.match(rgx);
@@ -90,8 +92,9 @@ export class DS4Roll extends DiceTerm {
         const maxCritSuccess = parseCritSucc ? parseInt(parseCritSucc) : 1;
         const minCritFail = parsedCritFail ? parseInt(parsedCritFail) : 20;
 
+        // noinspection UnnecessaryLocalVariableJS
         const newResults: Array<RollResult> = (this.results as Array<RollResult>).map((r) => {
-            return ds4roll(this.faces, { minCritFail: minCritFail, maxCritSucc: maxCritSuccess }, r.dice);
+            return ds4roll(this.targetValue, { minCritFail: minCritFail, maxCritSucc: maxCritSuccess }, r.dice);
         });
 
         this.results = newResults;
@@ -124,14 +127,16 @@ export class DS4Roll extends DiceTerm {
                 this.results.push(newRoll);
             }
 
-            if (checked > 1000) throw new Error("Maximum recursion depth for explodign dice roll exceeded");
+            if (checked > 1000) throw new Error("Maximum recursion depth for exploding dice roll exceeded");
         }
     }
 
-    // TODO: To Types
+    static DEFAULT_TARGET_VALUE = 10;
+    // TODO: add to Type declarations
     static DENOMINATION = "s";
     static MODIFIERS = {
         x: "explode",
         c: "crits",
+        v: "noop", // Modifier is consumed in constructor for target value
     };
 }