diff --git a/src/tasks/mod.rs b/src/tasks/mod.rs
index 2c05297..05b3956 100644
--- a/src/tasks/mod.rs
+++ b/src/tasks/mod.rs
@@ -5,14 +5,18 @@ use std::{
 };
 
 use crate::utils::parse::{Responses, Testcase, Testcases};
-use tasks01::poly2block::{self, poly2block};
+use tasks01::{
+    block2poly::block2poly,
+    poly2block::{self, poly2block},
+};
 
+use anyhow::{anyhow, Result};
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
 
 mod tasks01;
 
-pub fn task_deploy(testcase: &Testcase) -> Result<Value, String> {
+pub fn task_deploy(testcase: &Testcase) -> Result<Value> {
     /*
      * Function to automatially distribute task workloads
      * TODO: Add functionality to also pass semantics
@@ -27,10 +31,12 @@ pub fn task_deploy(testcase: &Testcase) -> Result<Value, String> {
             let json = json!({"block" : result});
             Ok(json)
         }
-        _ => Err(format!(
-            "Fatal error in task distribution. Data was: {:?}",
-            args
-        )),
+        "block2poly" => {
+            let result: Vec<u8> = block2poly(args)?;
+            let json = json!({"block" : result});
+            Ok(json)
+        }
+        _ => Err(anyhow!("Fatal. No compatible action found")),
     }
 }
 
diff --git a/src/tasks/tasks01/block2poly.rs b/src/tasks/tasks01/block2poly.rs
index df0f164..d44fcb4 100644
--- a/src/tasks/tasks01/block2poly.rs
+++ b/src/tasks/tasks01/block2poly.rs
@@ -1,11 +1,17 @@
-use std::str::Bytes;
+use std::{str::Bytes, string};
 
 use crate::utils::poly;
+use anyhow::Result;
 use base64::prelude::*;
+use serde_json::Value;
 
-fn block2poly(block: &str) -> Vec<u8> {
+pub fn block2poly(val: &Value) -> Result<Vec<u8>> {
     // Convert JSON data in to a u128
-    let decoded: Vec<u8> = BASE64_STANDARD.decode(block).unwrap();
+    // TODO: Transfer decoding into own function?
+    eprintln!("Decoded is: {:?}", val["block"]);
+    let string: String = serde_json::from_value(val["block"].clone())?;
+    let decoded: Vec<u8> = BASE64_STANDARD.decode(string)?;
+
     let mut bytes: [u8; 16] = [0u8; 16];
     bytes.copy_from_slice(&decoded);
     let number: u128 = <u128>::from_ne_bytes(bytes);
@@ -14,39 +20,34 @@ fn block2poly(block: &str) -> Vec<u8> {
 
     for shift in 0..128 {
         //println!("{:?}", ((num >> shift) & 1));
-        if (((number >> shift) & 1) == 1) {
+        if ((number >> shift) & 1) == 1 {
             println!("Shift success");
             coefficients.push(shift);
         }
     }
 
-    //Legacy code. 
-    // TODO: Remove
-    /*
-    let mut counter: u8 = 0;
-    let mut coefficients: Vec<u8> = vec![];
-    for blk in decoded {
-        let indices: Vec<u8> = poly::get_bit_indices_from_byte(blk);
-        for index in indices {
-            coefficients.push(counter*8+index);
-        }
-        counter += 1;
-    }
-    */
-    coefficients
+    Ok(coefficients)
 }
 
 #[cfg(test)]
 mod tests {
+    use serde_json::json;
     use std::str::FromStr;
 
     // Note this useful idiom: importing names from outer (for mod tests) scope.
     use super::*;
 
     #[test]
-    fn block2poly_task01() {
-        let block: &str = "ARIAAAAAAAAAAAAAAAAAgA==";
+    fn block2poly_task01() -> Result<()> {
+        let block: Value = json!({"block" : "ARIAAAAAAAAAAAAAAAAAgA=="});
         let coefficients: Vec<u8> = vec![0, 9, 12, 127];
-        assert_eq!(block2poly(block), coefficients);
+        assert_eq!(
+            block2poly(&block)?,
+            coefficients,
+            "Coefficients were: {:?}",
+            block2poly(&block)?
+        );
+
+        Ok(())
     }
-}
\ No newline at end of file
+}
diff --git a/src/tasks/tasks01/poly2block.rs b/src/tasks/tasks01/poly2block.rs
index 5d64250..b9bacab 100644
--- a/src/tasks/tasks01/poly2block.rs
+++ b/src/tasks/tasks01/poly2block.rs
@@ -9,5 +9,6 @@ pub fn poly2block(args: &Value) -> String {
         .into_iter()
         .map(|x| x.as_u64().unwrap() as u8)
         .collect();
+
     BASE64_STANDARD.encode(poly::coefficient_to_binary(coefficients).to_ne_bytes())
 }
diff --git a/src/test_json/b2p_p2b_example.json b/src/test_json/b2p_p2b_example.json
new file mode 100644
index 0000000..4eb968f
--- /dev/null
+++ b/src/test_json/b2p_p2b_example.json
@@ -0,0 +1,23 @@
+{
+    "testcases": {
+      "b856d760-023d-4b00-bad2-15d2b6da22fe": {
+    "action": "block2poly",
+    "arguments": {
+    "semantic": "xex",
+    "block": "ARIAAAAAAAAAAAAAAAAAgA=="
+    }
+    },
+    "254eaee7-05fd-4e0d-8292-9b658a852245": {
+        "action": "poly2block",
+        "arguments": {
+          "semantic": "xex",
+          "coefficients": [
+            12,
+            127,
+            9,
+            0
+          ]
+        }
+      }
+    }
+}
diff --git a/src/test_json/block2poly_example.json b/src/test_json/block2poly_example.json
new file mode 100644
index 0000000..4b4d541
--- /dev/null
+++ b/src/test_json/block2poly_example.json
@@ -0,0 +1,10 @@
+{
+    "testcases": {
+      "b856d760-023d-4b00-bad2-15d2b6da22fe": {
+    "action": "block2poly",
+    "arguments": {
+    "semantic": "xex",
+    "block": "ARIAAAAAAAAAAAAAAAAAgA=="
+    }
+    }
+}
\ No newline at end of file