The following can also be achieved

Do not show lines drawn on other currency pairs

In MT4, lines drawn on a chart are usually shared on a single chart,

Even if I change the currency pair, the price range is still displayed as close to the price range.

For example, the figure below shows the line (1.43558) drawn at the neckline of the GBPUSD double bottom

The same line has been displayed on EURUSD, which is in a similar price range.

And since I've been drawn to a place that doesn't make any sense at all.

The more lines there are, the more difficult it is to tell if a line is important or not.

The indicator can be used to hide the EURUSD line shown above.

However, there is a limitation. Lines created normally will not be hidden and require the following settings.

Format: Sync_[currency_pair]_[time_axis]

As expected, it is troublesome to make this setting every time, so the Sync series indicators in the table below can be used.

It is automatically set when creating an object such as a line.

trade (brand) name	production, commercial version	trial edition
Chart object synchronization indicator (horizontal lines, trend lines, channels, etc.) [SyncObjects].	link	link
Vertical Line Synchronization Indicator 【SyncVerticalLine】.	link	link
Horizontal line synchronization indicator [SyncHorizontalLine].	link	link
Trend line synchronization indicator [SyncTrendLine	link	link
Parallel channel synchronization indicator 【SyncChannel】.	link	link
Fibonacci Retracement Synchronization Indicator [SyncFibo	link	link
Fibonacci Channel Synchronization Indicator [SyncTrendLine	link	link
Rectangular Synchronization Indicator 【SyncRectangle】.	link	link

Key Settings

Specify the key for changing currency pairs.

The default is "→" to change to the next currency pair and "←" to change to the previous currency pair.

Object settings when switching currency pairs

Show all: Show the object even if it is not the currency pair in which the object was created.
Show only the currency pair at creation: Show only that object for the currency pair at the time the object was created (with the aforementioned limitations)
Set per object: Set per object (see below)

If you select "Set per object", the following settings are available

Display only the currency pair at the time of [Object Type] creation.

false: Display the object even if it is not the currency pair in which the object was created
true: only the currency pair for which the object was created will be displayed (with the aforementioned limitations)

For example, I want to display currency pair specific objects such as horizontal lines only for the currency pair at the time of creation, but

Used when you want to display the same for all currency pairs, such as vertical lines.

The above settings are applied only when a key is entered.

　This does not apply when switching in the toolbar's currency pair settings.

Toggle currency pairs on all charts

false: Switch only to the currency pair in the specified chart when switching currency pairs by key input
true: Switch all currency pairs in the displayed chart when switching currency pairs by key entry

The above settings are applied only when a key is entered.

　This does not apply when switching in the toolbar's currency pair settings.

【お試し版】通貨ペア切り替えインジケーター【ChangeSymbol】