Convert 3 indicators from MQL4 to MQL5

I have an issue with my ninja script and i would like you to help me straighten things I wanted to create an indicator and i have the source code already but i am getting compiling errors on my NinjaTrader And i tried fixing the error it still same I sent 3 images here for you to understand the errors and i would like to ask if you can help me fix it so i can go ahead and compile my source code. Thanks

So the things we need in algorithm of mql5 language EA in mt5 1. Depending on timeframe it can recognise the previous swing high and low 2. Timeframe is 5m,15m,1h,4h 3. It can recognise the basic Market bias that is market is bullish or bearish we can identify using (ema,rsi,basic smc bias,ict bias structure mapping) or use anything to find bias structure 4. EA should have option to change timeframe and change risk

I have a perfectly working EA that always gets altered, I need special security features implemented, and I already have a great idea of what I need. Super easy, codes already work, just need tweaking here and there. Cybersecurity proficiency would be a positive

I need a custom Expert Advisor for MetaTrader 5 that trades AUDUSD and AUDCAD using a medium-risk strategy. It should use fixed lot size, stop-loss and take-profit, and limit open trades. The bot must be compatible with Pepperstone live accounts and optimized for H1 timeframe. No martingale or grid strategies. I want clean code, reliable execution, and visible trade logic. File format should be .ex5

Quiero contratar un programador para crear un EA (Expert Advisor) para MetaTrader 5 con las siguientes características: REQUISITOS DEL EA: 1. Operar en el instrumento XAUUSD o XAUUSDm (Exness). 2. Estrategia tipo scalping, abriendo compras y ventas continuas. 3. Lote inicial 0.01, con opción para aumentar automáticamente el lote. 4. Meta diaria: cuando el robot gane 100 USD, debe detenerse automáticamente (no abrir

generate or create me a python coded file that has mql5 language requirements for a trading bot under the following instructions. the bot must execute trades if necessary the bot must trade 24/7 the bot must trade gold and currency the bot must make unlimited profit hourly the bot must enter market with caution after market analysis of 98 percent of clear trade