Arnold Holm

Would your strategy have survived your prop firm's rules? Challenge Pre-Check: free rule sheet in 24 h, 12-month test against prop limits. Historical simulation, not a forecast.

Joined on Aug 15, 2026 https://stratcorealpha.com/challenge-check?ref=devto&intent=challenge-check

Work

StratCoreAlpha

Arnold Holm

Oct 14

MT4 error 146: why a deferred signal needs a fresh quote

#debugging #programming #mql4 #algotrading

3 min read

Want to connect with Arnold Holm?

Create an account to connect with Arnold Holm. You can also sign in below to proceed if you already have an account.

Create Account

Already have an account? Sign in

Arnold Holm

Oct 13

Your Python trading bot restarted. Why did it send twice?

#python #algotrading

3 min read

Arnold Holm

Oct 11

Why does a smaller MT4 lot size still return error 131?

#trading

3 min read

Arnold Holm

Oct 10

$176.82 overlooked: when your daily reset starts from the wrong value

#backtesting #trading

3 min read

Arnold Holm

Oct 9

0.47% a year: why your challenge target needs a different test

#trading #forex #algotrading #testing

3 min read

Arnold Holm

Oct 8

Your $10,756.64 backtest needs the $10,019.82 open-trade row

#trading #beginners #testing

3 min read

Arnold Holm

Oct 6

MT4 error 130: check the stop's side before its distance

#trading #mql4

3 min read

Arnold Holm

Oct 5

TradingView Strategy Tester No Data: Trace the Missing Stage

#testing #debugging

5 min read

Arnold Holm

Oct 4

Log the requested filling policy before retrying an MT5 order

#testing

2 min read

Arnold Holm

Oct 1

Put the cost threshold beside a backtest win rate

#testing #python

4 min read

Arnold Holm

Sep 30

Trace a Missed MT5 Entry Without Turning Missing Data into a False Signal

#testing #javascript

3 min read

Arnold Holm

Sep 29

An MT5 order call is not a position: three checks for an EA

#mql5 #testing #automation #debugging

2 min read

Arnold Holm

Sep 23

A Missing Risk Check Is Not a "No"

#testing #javascript #automation #fintech

3 min read

Arnold Holm

Sep 20

A Successful Response Can Still Belong to the Wrong Screen

#testing

2 min read

Arnold Holm

Sep 17

A Decision Trace Must Distinguish False From Missing

#testing

3 min read

Arnold Holm

Sep 16

A Trading Restriction Needs an Owner: Three Tests for Account Scope

#testing

4 min read

Arnold Holm

Sep 9

Wrong Target, Clean Success: A Node Test for Misrouted Saves

#javascript #node #testing #security

6 min read

Arnold Holm

Sep 2

A Paired Buy and Sell EA Needs One Explicit Cycle State

#automation #testing #programming

4 min read

Arnold Holm

Aug 15

Eight Session-Boundary Tests I Run Before Trusting a Trading Bot

#testing #csharp #automation #dotnet

2 min read

DEV Community

Arnold Holm

Badges

4 Week Community Wellness Streak

2 Week Community Wellness Streak

1 Week Community Wellness Streak

Writing Debut

Skills/Languages

Available for

MT4 error 146: why a deferred signal needs a fresh quote

Want to connect with Arnold Holm?

Your Python trading bot restarted. Why did it send twice?

Why does a smaller MT4 lot size still return error 131?

$176.82 overlooked: when your daily reset starts from the wrong value

0.47% a year: why your challenge target needs a different test

Your $10,756.64 backtest needs the $10,019.82 open-trade row

MT4 error 130: check the stop's side before its distance

TradingView Strategy Tester No Data: Trace the Missing Stage

Log the requested filling policy before retrying an MT5 order

Put the cost threshold beside a backtest win rate

Trace a Missed MT5 Entry Without Turning Missing Data into a False Signal

An MT5 order call is not a position: three checks for an EA

A Missing Risk Check Is Not a "No"

A Successful Response Can Still Belong to the Wrong Screen

A Decision Trace Must Distinguish False From Missing

A Trading Restriction Needs an Owner: Three Tests for Account Scope

Wrong Target, Clean Success: A Node Test for Misrouted Saves

A Paired Buy and Sell EA Needs One Explicit Cycle State

Eight Session-Boundary Tests I Run Before Trusting a Trading Bot