Timespan not parsing when using variables

[Whimsyturtle]

Description

Skript can parse timestamps when the values are given directly, e.g. 5 seconds, but is unable to do so when the direct value is replaced with a variable, e.g. {_x} seconds or arg-1 seconds

Steps to Reproduce

command /test <number>:
    trigger:
        set {_t} to arg-1 seconds
        set {_n} to arg-1
        set {_t} to {_n} seconds

Expected Behavior

For the timespan to be properly parsed

Errors / Screenshots

Line 3: Can't understand this expression: 'arg-1 seconds' (script.sk, line 3: set {_t} to (arg-1) seconds')
Line 5: Can't understand this expression: '{_n} seconds' (script.sk, line 5: set {_t} to {_n} seconds')

Server Information

• Server version/platform: Spigot 1.14.2
• Skript version: 2.4.1-alpha3

Additional Context

[TPGamesNL]

Alternatively you can use "%arg-1% seconds" parsed as a timespan, but an expression like %number% (seconds|minutes|etc) would be nice

[Whimsyturtle]

Didn't know you could do that... oops

[FranKusmiruk]

@TPGamesNL that would probably end up breaking more than what it solves, parsing it is the proper solution to the issue.