Trailing stop loss error

Dear Developers I appreciate the users friendly software. Currently I view a big error in trailing stop loss is that it keeps changing as the market moves. For Example I place a trailing stop loss of 100 pips but when market moves and stop loss margin reduces for example stop loss reduced to 80 pips and when market move upward the trailing stop loss is taken as 80 pips. If market moves once or twice in the same range the stop loss reduced to 40 pips and so is the trailing stop loss. This results in stop loss hits at very low margins. It is therefore requested to ensure the trailing stop loss should move with same margin as 100 pips as per above example.